I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs)

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) II.a II - Pulmonary edema - Acute lung injury - ARDS
II.a - Pulmonary edema, noncardiogenic (NCPE) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.a III - Pulmonary/alveolar hemorrhage
III.a - Alveolar hemorrhage, diffuse (DAH) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma VI.b VI - Pulmonary vasculopathies
VI.b - Pulmonary arterial hypertension X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reactions (may involve skin, throat and/or airways) X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) X.ac X - Systemic/Distant conditions, syndromes and reactions
X.ac - Anti-GBM antibody disease (Goodpasture-like or flare of preexisting GS) X.an X - Systemic/Distant conditions, syndromes and reactions
X.an - Cytokine release syndrome XIII.b XIII - Neoplastic conditions
XIII.b - Lymphoproliferative disease (pulmonary, endobronchial, endothoracic) XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XVII.b XVII - Infections & related conditions
XVII.b - Opportunistic pulmonary/systemic infection XVII.e XVII - Infections & related conditions
XVII.e - Pneumocystis jiroveci pneumonia XVII.h XVII - Infections & related conditions
XVII.h - Nontuberculous pulmonary mycobacterial infection/superinfection

X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary/systemic (ANCA-positive) XI.n XI - Miscellaneous
XI.n - Neutropenia, agranulocytosis (w/wo infection/sepsis)

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.a III - Pulmonary/alveolar hemorrhage
III.a - Alveolar hemorrhage, diffuse (DAH) IV.d IV - Airway involvement
IV.d - Cough (lone) V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) XI.c XI - Miscellaneous
XI.c - Pleuritic chest pain (see also under Vi) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVII.f XVII - Infections & related conditions
XVII.f - Tuberculosis, miliary XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes XIX.b XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.b - BAL: An excess proportion of neutrophils XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.n I - Interstitial/parenchymal lung disease
I.n - Pulmonary alveolar proteinosis (PAP) I.al I - Interstitial/parenchymal lung disease
I.al - Silicone pneumonitis - 'Silicone lung' I.am I - Interstitial/parenchymal lung disease
I.am - Siliconoma III.a III - Pulmonary/alveolar hemorrhage
III.a - Alveolar hemorrhage, diffuse (DAH) V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion V.v V - Pleural and/or pericardial involvement
V.v - Silicone pleural effusion V.w V - Pleural and/or pericardial involvement
V.w - Silicone pleural nodules - Pleural siliconomas VII.a VII - Mediastinal involvement
VII.a - Lymphadenopathy (intrathoracic) VII.e VII - Mediastinal involvement
VII.e - Granulomatous mediastinal lymphadenopathy X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.h X - Systemic/Distant conditions, syndromes and reactions
X.h - Eosinophilic granulomatosis with polyangiitis (Churg-Strauss) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (Pulmonary and/or systemic) - ANCA status unknown or negative) X.q X - Systemic/Distant conditions, syndromes and reactions
X.q - Systemic inflammatory response X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary/systemic (ANCA-positive) X.ad X - Systemic/Distant conditions, syndromes and reactions
X.ad - Skin purpura, ecchymoses or necrosis XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XIII.f XIII - Neoplastic conditions
XIII.f - Fibromatosis of the chest wall XIII.h XIII - Neoplastic conditions
XIII.h - Pulmonary nodular lymphoid hyperplasia XIII.i XIII - Neoplastic conditions
XIII.i - Breast implant-associated anaplastic large cell lymphoma XV.bn XV - Pathology
XV.bn - Path: Silicone in lung tissue, pulmonary vasculature, or lymph nodes XV.cq XV - Pathology
XV.cq - Path: Silicone lymphadenopathy XV.cr XV - Pathology
XV.cr - Path: Silicone pleural nodules or siliconoma (See under Vw) XVI.k XVI - Imaging
XVI.k - Imaging: An area or areas of consolidation XVI.av XVI - Imaging
XVI.av - Imaging: Displacement/migration of a breast implant XVI.bh XVI - Imaging
XVI.bh - Imaging: F18-PET scan positive lympadenopathy XVIII.c XVIII - Distinctive patterns - 'Eye-catchers'
XVIII.c - Eye catcher: A displaced breast implant

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis (Not otherwise specified) I.m I - Interstitial/parenchymal lung disease
I.m - ILD with a granulomatous component I.q I - Interstitial/parenchymal lung disease
I.q - Pulmonary nodulosis I.w I - Interstitial/parenchymal lung disease
I.w - Rapidly progressive ILD/pulmonary fibrosis (Hamman-Rich syndrome) I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis III.a III - Pulmonary/alveolar hemorrhage
III.a - Alveolar hemorrhage, diffuse (DAH) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericardial effusion (ANA unknown or negative) VI.a VI - Pulmonary vasculopathies
VI.a - Venous thrombosis/thromboembolism - Pulmonary embolism VI.d VI - Pulmonary vasculopathies
VI.d - Pulmonary vasculitis or capillaritis VII.a VII - Mediastinal involvement
VII.a - Lymphadenopathy (intrathoracic) VIII.a VIII - Central-large-upper airway (incl pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) IX.q IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.q - Obstructive sleep apnea X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (Pulmonary and/or systemic) - ANCA status unknown or negative) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary/systemic (ANCA-positive) X.ar X - Systemic/Distant conditions, syndromes and reactions
X.ar - Relapse/flare/onset of Crohn's disease XI.ad XI - Miscellaneous
XI.ad - Granulomas on tattoo edges XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XV.ba XV - Pathology
XV.ba - Path: Granulomatous lymphadenopathy XVII.a XVII - Infections & related conditions
XVII.a - Respiratory tract infection incl. pneumonia XVII.b XVII - Infections & related conditions
XVII.b - Opportunistic pulmonary/systemic infection XVII.f XVII - Infections & related conditions
XVII.f - Tuberculosis, miliary XVII.g XVII - Infections & related conditions
XVII.g - Tuberculosis (pulmonary, extrapulmonary, reactivation or de novo) XVII.h XVII - Infections & related conditions
XVII.h - Nontuberculous pulmonary mycobacterial infection/superinfection XVII.ab XVII - Infections & related conditions
XVII.ab - Protozoan infection (incl. leishmaniasis)

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.a III - Pulmonary/alveolar hemorrhage
III.a - Alveolar hemorrhage, diffuse (DAH) III.b III - Pulmonary/alveolar hemorrhage
III.b - Pneumorenal syndrome III.d III - Pulmonary/alveolar hemorrhage
III.d - Alveolar hemorrhage, diffuse (ANCA-positive/-related) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.i V - Pleural and/or pericardial involvement
V.i - Pleuritis (may cause acute chest pain (see also under XIc) V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericardial effusion (ANA unknown or negative) VI.d VI - Pulmonary vasculopathies
VI.d - Pulmonary vasculitis or capillaritis VIII.a VIII - Central-large-upper airway (incl pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) VIII.c VIII - Central-large-upper airway (incl pharyngeal-nasal) involvement
VIII.c - Upper airway obstruction other than angioedema or hematoma VIII.h VIII - Central-large-upper airway (incl pharyngeal-nasal) involvement
VIII.h - Vocal cord dysfunction, adduction, closure X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRESS - DRESS-like reaction X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (Pulmonary and/or systemic) - ANCA status unknown or negative) X.o X - Systemic/Distant conditions, syndromes and reactions
X.o - Neutrophilic dermatosis (Pyoderma, Sweet syndrome) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary/systemic (ANCA-positive) X.ak X - Systemic/Distant conditions, syndromes and reactions
X.ak - Dual MPO-/PR3-ANCA systemic disease/vasculitis XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.k XII - Cardiovascular involvement / toxicity
XII.k - Pericardial thickening - Constrictive pericarditis XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL)

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) II.a II - Pulmonary edema - Acute lung injury - ARDS
II.a - Pulmonary edema, noncardiogenic (NCPE) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury II.d II - Pulmonary edema - Acute lung injury - ARDS
II.d - Pulmonary edema, cardiogenic II.f II - Pulmonary edema - Acute lung injury - ARDS
II.f - Hypoxemia, low saturation (may occur in isolation) II.i II - Pulmonary edema - Acute lung injury - ARDS
II.i - Flash (fulminate) pulmonary edema II.r II - Pulmonary edema - Acute lung injury - ARDS
II.r - Interstitial pulmonary edema IX.h IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.h - Dyspnea, unexplained otherwise X.b X - Systemic/Distant conditions, syndromes and reactions
X.b - Antiphospholipid antibodies w/wo the APL syndrome X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.u X - Systemic/Distant conditions, syndromes and reactions
X.u - Multiple organ dysfunction/failure (MODS/MOF) XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.n XII - Cardiovascular involvement / toxicity
XII.n - Cardiovascular collapse - Cardiogenic shock XXI.a XXI - Rechallenge data
XXI.a - Has led to near-fatal or fatal relapse

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.f I - Interstitial/parenchymal lung disease
I.f - Acute fibrinous organizing pneumonia (AFOP) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis (Not otherwise specified) I.u I - Interstitial/parenchymal lung disease
I.u - Relapsing or migrating pneumonitis/pneumonia (see also Id) I.v I - Interstitial/parenchymal lung disease
I.v - Altered lung function/PFTs (can be subclinical) I.w I - Interstitial/parenchymal lung disease
I.w - Rapidly progressive ILD/pulmonary fibrosis (Hamman-Rich syndrome) I.aa I - Interstitial/parenchymal lung disease
I.aa - Delayed ILD, -pneumonitis, -fibrosis I.aj I - Interstitial/parenchymal lung disease
I.aj - Shrinking lung syndrome II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury II.d II - Pulmonary edema - Acute lung injury - ARDS
II.d - Pulmonary edema, cardiogenic III.m III - Pulmonary/alveolar hemorrhage
III.m - Coagulopathy IV.c IV - Airway involvement
IV.c - Obliterative bronchiolitis (a pattern consistent with) (see also IVn, XVx) IV.n IV - Airway involvement
IV.n - Obstructive airway dysfunction (see also IVc, XVx) V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion VII.a VII - Mediastinal involvement
VII.a - Lymphadenopathy (intrathoracic) IX.a IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.a - Diaphragm/inspiratory muscle weakness/paralysis (w/wo ARF) IX.r IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.r - Myasthenia gravis (may cause neuromuscular ARF) IX.ab IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.ab - Guillain-Barré (or GB-like) syndrome (w/wo ARF) IX.ac IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.ac - Myositis of the respiratory muscles (May lead to respiratory muscle paralysis) X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRESS - DRESS-like reaction X.c X - Systemic/Distant conditions, syndromes and reactions
X.c - Capillary leak syndrome (CLS) X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reactions (may involve skin, throat and/or airways) X.h X - Systemic/Distant conditions, syndromes and reactions
X.h - Eosinophilic granulomatosis with polyangiitis (Churg-Strauss) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) X.u X - Systemic/Distant conditions, syndromes and reactions
X.u - Multiple organ dysfunction/failure (MODS/MOF) X.am X - Systemic/Distant conditions, syndromes and reactions
X.am - Immune-related adverse effect/toxicity X.aw X - Systemic/Distant conditions, syndromes and reactions
X.aw - Connective tissue disease X.ay X - Systemic/Distant conditions, syndromes and reactions
X.ay - Polymyalgia rheumatica XI.n XI - Miscellaneous
XI.n - Neutropenia, agranulocytosis (w/wo infection/sepsis) XI.y XI - Miscellaneous
XI.y - Adrenal suppression XI.ag XI - Miscellaneous
XI.ag - Vertebral compression fracture XI.au XI - Miscellaneous
XI.au - Graft vs. host disease in transplant recipients XI.av XI - Miscellaneous
XI.av - Deterioration of graft function in SOT recipients XI.ba XI - Miscellaneous
XI.ba - Nonrespiratory AE of interest XII.a XII - Cardiovascular involvement / toxicity
XII.a - Left ventricular dysfunction/failure XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis XII.e XII - Cardiovascular involvement / toxicity
XII.e - Takotsubo (stress) cardiomyopathy XII.l XII - Cardiovascular involvement / toxicity
XII.l - Cardiac arrhythmias or dysrhythmias (AF, VT, VF, TdP) XII.n XII - Cardiovascular involvement / toxicity
XII.n - Cardiovascular collapse - Cardiogenic shock XII.s XII - Cardiovascular involvement / toxicity
XII.s - Conduction disorders - Heart block (bundle branch- or AV-) XII.ai XII - Cardiovascular involvement / toxicity
XII.ai - Cardiotoxicity XII.ax XII - Cardiovascular involvement / toxicity
XII.ax - Necrotizing myocarditis (w/o evidence for CAD) XII.ba XII - Cardiovascular involvement / toxicity
XII.ba - Sudden cardiac death XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.d XV - Pathology
XV.d - Path: Acute fibrinous organizing pneumonia (AFOP-pattern) (see also If) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.l XV - Pathology
XV.l - Path: Pulmonary fibrosis (not otherwise specified or unclassifiable) XV.v XV - Pathology
XV.v - Path: Micronodular organizing pneumonia/BOOP XV.ba XV - Pathology
XV.ba - Path: Granulomatous lymphadenopathy XV.co XV - Pathology
XV.co - Path: Foamy inclusions in alveolar macrophages and/or in other lung cells XV.cp XV - Pathology
XV.cp - Path: Pneumocyte vacuolization XVI.k XVI - Imaging
XVI.k - Imaging: An area or areas of consolidation XVI.v XVI - Imaging
XVI.v - Imaging: Centrilobular micronodules (can be diffuse) XVII.b XVII - Infections & related conditions
XVII.b - Opportunistic pulmonary/systemic infection XVII.c XVII - Infections & related conditions
XVII.c - Aspergillosis, pulmonary (invasive, allergic [ABPA], or mycetoma) XVII.e XVII - Infections & related conditions
XVII.e - Pneumocystis jiroveci pneumonia XVII.g XVII - Infections & related conditions
XVII.g - Tuberculosis (pulmonary, extrapulmonary, reactivation or de novo) XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes XIX.b XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.b - BAL: An excess proportion of neutrophils XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis (Not otherwise specified) I.w I - Interstitial/parenchymal lung disease
I.w - Rapidly progressive ILD/pulmonary fibrosis (Hamman-Rich syndrome) I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.a III - Pulmonary/alveolar hemorrhage
III.a - Alveolar hemorrhage, diffuse (DAH) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) VI.a VI - Pulmonary vasculopathies
VI.a - Venous thrombosis/thromboembolism - Pulmonary embolism VI.d VI - Pulmonary vasculopathies
VI.d - Pulmonary vasculitis or capillaritis X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRESS - DRESS-like reaction X.b X - Systemic/Distant conditions, syndromes and reactions
X.b - Antiphospholipid antibodies w/wo the APL syndrome X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reactions (may involve skin, throat and/or airways) X.h X - Systemic/Distant conditions, syndromes and reactions
X.h - Eosinophilic granulomatosis with polyangiitis (Churg-Strauss) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary/systemic (ANCA-positive) X.ah X - Systemic/Distant conditions, syndromes and reactions
X.ah - Granulomatosis with polyangiitis (w/wo ANCA) or flare of X.ar X - Systemic/Distant conditions, syndromes and reactions
X.ar - Relapse/flare/onset of Crohn's disease XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.cf XV - Pathology
XV.cf - Path: Pleural granulomas XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVII.b XVII - Infections & related conditions
XVII.b - Opportunistic pulmonary/systemic infection XVII.c XVII - Infections & related conditions
XVII.c - Aspergillosis, pulmonary (invasive, allergic [ABPA], or mycetoma) XVII.d XVII - Infections & related conditions
XVII.d - Pneumocystis jiroveci pulmonary colonization XVII.e XVII - Infections & related conditions
XVII.e - Pneumocystis jiroveci pneumonia XVII.f XVII - Infections & related conditions
XVII.f - Tuberculosis, miliary XVII.g XVII - Infections & related conditions
XVII.g - Tuberculosis (pulmonary, extrapulmonary, reactivation or de novo) XVII.h XVII - Infections & related conditions
XVII.h - Nontuberculous pulmonary mycobacterial infection/superinfection XVII.n XVII - Infections & related conditions
XVII.n - Legionella pneumophila pneumonia XVII.o XVII - Infections & related conditions
XVII.o - Nocardia pulmonary/systemic infection XVII.q XVII - Infections & related conditions
XVII.q - Viral pneumonia XVII.r XVII - Infections & related conditions
XVII.r - Fungal infection (pulmonary/extrapulmonary) XVII.y XVII - Infections & related conditions
XVII.y - Cryptococcus pulmonary infection XVII.z XVII - Infections & related conditions
XVII.z - Histoplamosis (reactivation) XVII.ac XVII - Infections & related conditions
XVII.ac - Actinomycosis

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.m I - Interstitial/parenchymal lung disease
I.m - ILD with a granulomatous component I.v I - Interstitial/parenchymal lung disease
I.v - Altered lung function/PFTs (can be subclinical) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericardial effusion (ANA unknown or negative) VII.e VII - Mediastinal involvement
VII.e - Granulomatous mediastinal lymphadenopathy IX.j IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.j - Phrenic nerve injury - Hemi- or bilateral diaphragmatic paralysis IX.r IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.r - Myasthenia gravis (may cause neuromuscular ARF) IX.ab IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.ab - Guillain-Barré (or GB-like) syndrome (w/wo ARF) X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRESS - DRESS-like reaction X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reactions (may involve skin, throat and/or airways) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) X.l X - Systemic/Distant conditions, syndromes and reactions
X.l - Systemic granulomatosis other than Xk X.o X - Systemic/Distant conditions, syndromes and reactions
X.o - Neutrophilic dermatosis (Pyoderma, Sweet syndrome) X.am X - Systemic/Distant conditions, syndromes and reactions
X.am - Immune-related adverse effect/toxicity XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis XII.az XII - Cardiovascular involvement / toxicity
XII.az - Fulminant myocarditis (See also under XIId) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.ci XV - Pathology
XV.ci - Path: Fibrinous pericarditis XVI.bh XVI - Imaging
XVI.bh - Imaging: F18-PET scan positive lympadenopathy XVII.b XVII - Infections & related conditions
XVII.b - Opportunistic pulmonary/systemic infection XVII.c XVII - Infections & related conditions
XVII.c - Aspergillosis, pulmonary (invasive, allergic [ABPA], or mycetoma) XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.k I - Interstitial/parenchymal lung disease
I.k - Lung nodule or nodules I.l I - Interstitial/parenchymal lung disease
I.l - Diffuse alveolar damage (DAD) (see alsoo under IIb and XVf) I.aj I - Interstitial/parenchymal lung disease
I.aj - Shrinking lung syndrome II.a II - Pulmonary edema - Acute lung injury - ARDS
II.a - Pulmonary edema, noncardiogenic (NCPE) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury IV.d IV - Airway involvement
IV.d - Cough (lone) V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericardial effusion (ANA unknown or negative) VII.a VII - Mediastinal involvement
VII.a - Lymphadenopathy (intrathoracic) X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRESS - DRESS-like reaction X.b X - Systemic/Distant conditions, syndromes and reactions
X.b - Antiphospholipid antibodies w/wo the APL syndrome X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reactions (may involve skin, throat and/or airways) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (Pulmonary and/or systemic) - ANCA status unknown or negative) X.o X - Systemic/Distant conditions, syndromes and reactions
X.o - Neutrophilic dermatosis (Pyoderma, Sweet syndrome) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary/systemic (ANCA-positive) X.v X - Systemic/Distant conditions, syndromes and reactions
X.v - Systemic eosinophilic syndrome w/wo vasculitis (see also Xa) X.aj X - Systemic/Distant conditions, syndromes and reactions
X.aj - Polyarteritis nodosa-like condition XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.c XI - Miscellaneous
XI.c - Pleuritic chest pain (see also under Vi) XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis XII.as XII - Cardiovascular involvement / toxicity
XII.as - Giant cell myocarditis XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.ac XV - Pathology
XV.ac - Path: Pulmonary vasculitis other than capillaritis XV.ad XV - Pathology
XV.ad - Path: Eosinophilic vasculitis XV.af XV - Pathology
XV.af - Path: Granulomatous pulmonary vasculitis XV.cj XV - Pathology
XV.cj - Path: Brownish macrophages in airspaces (airways - alveoli) XVI.e XVI - Imaging
XVI.e - Imaging: Pulmonary opacities with a subpleural distribution XIX.b XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.b - BAL: An excess proportion of neutrophils XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis (Not otherwise specified) I.l I - Interstitial/parenchymal lung disease
I.l - Diffuse alveolar damage (DAD) (see alsoo under IIb and XVf) I.r I - Interstitial/parenchymal lung disease
I.r - ILD with an imaging pattern consistent with DIP II.a II - Pulmonary edema - Acute lung injury - ARDS
II.a - Pulmonary edema, noncardiogenic (NCPE) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury II.j II - Pulmonary edema - Acute lung injury - ARDS
II.j - Transient pulmonary opacities/infiltrates III.a III - Pulmonary/alveolar hemorrhage
III.a - Alveolar hemorrhage, diffuse (DAH) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma IV.ae IV - Airway involvement
IV.ae - Tracheobronchitis-like clinical pattern V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion V.b V - Pleural and/or pericardial involvement
V.b - Eosinophilic pleural effusion V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.i V - Pleural and/or pericardial involvement
V.i - Pleuritis (may cause acute chest pain (see also under XIc) VI.d VI - Pulmonary vasculopathies
VI.d - Pulmonary vasculitis or capillaritis VIII.b VIII - Central-large-upper airway (incl pharyngeal-nasal) involvement
VIII.b - Hematoma of/around the airway wall potentially causing UAO IX.i IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.i - Respiratory arrest - Apnea X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRESS - DRESS-like reaction X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary/systemic (ANCA-positive) XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.c XI - Miscellaneous
XI.c - Pleuritic chest pain (see also under Vi) XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XV.j XV - Pathology
XV.j - Path: Pulmonary fibrosis (UIP-pattern) XV.k XV - Pathology
XV.k - Path: Desquamative interstitial pneumonia (DIP-pattern) XV.x XV - Pathology
XV.x - Path: Acute/subacute bronchiolitis (see also IVc, IVi) XV.ac XV - Pathology
XV.ac - Path: Pulmonary vasculitis other than capillaritis XV.af XV - Pathology
XV.af - Path: Granulomatous pulmonary vasculitis XV.bi XV - Pathology
XV.bi - Path: Giant-cell interstitial pneumonia (GIP)-pattern XV.bl XV - Pathology
XV.bl - Path: Resolving alveolar damage XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVI.f XVI - Imaging
XVI.f - Imaging: Bibasilar opacities/shadowing XVI.l XVI - Imaging
XVI.l - Imaging: Peribronchovascular areas of consolidation XVI.bp XVI - Imaging
XVI.bp - Imaging: Reverse ventilation-perfusion mismatch

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis (Not otherwise specified) I.j I - Interstitial/parenchymal lung disease
I.j - Lipoid pneumonia, exogenous I.k I - Interstitial/parenchymal lung disease
I.k - Lung nodule or nodules I.s I - Interstitial/parenchymal lung disease
I.s - A mass or masses I.z I - Interstitial/parenchymal lung disease
I.z - Areas of consolidation I.ap I - Interstitial/parenchymal lung disease
I.ap - Paraffinoma - Lipidoma (ELP in the form of a nodule or mass) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.c III - Pulmonary/alveolar hemorrhage
III.c - Hemoptysis IV.w IV - Airway involvement
IV.w - Plugs/casts in the airways X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) XIII.a XIII - Neoplastic conditions
XIII.a - Lung cancer XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XV.p XV - Pathology
XV.p - Path: Exogenous lipoid pneumonia XV.q XV - Pathology
XV.q - Path: Foreign body deposits/granulomatous reaction XVI.a XVI - Imaging
XVI.a - Imaging: Diffuse haze XVI.f XVI - Imaging
XVI.f - Imaging: Bibasilar opacities/shadowing XVI.i XVI - Imaging
XVI.i - Imaging: An area or areas of involvement with a recognizable anatomic distribution XVI.k XVI - Imaging
XVI.k - Imaging: An area or areas of consolidation XVI.n XVI - Imaging
XVI.n - Imaging: Intralobular septal thickening - Crazy paving XVI.r XVI - Imaging
XVI.r - Imaging: An area or areas of involvement with low attenuation numbers XVI.w XVI - Imaging
XVI.w - Imaging: Lung nodule or nodules XVI.z XVI - Imaging
XVI.z - Imaging: A large nodule or a mass XVI.ab XVI - Imaging
XVI.ab - Imaging: Cavitating lung nodule, mass or nodules (see also Iq, XIs, XIIi, XVIaa and XVIIp) XVI.az XVI - Imaging
XVI.az - Imaging: Solitary pulmonary nodule XVII.h XVII - Infections & related conditions
XVII.h - Nontuberculous pulmonary mycobacterial infection/superinfection XVIII.r XVIII - Distinctive patterns - 'Eye-catchers'
XVIII.r - Eye catcher: A milky, cloudy or lumpy BAL fluid XIX.h XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.h - BAL: Exogenous (foreign) lipids in BAL cells XIX.j XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.j - BAL: Free exogenous lipids in supernatant XXIV.f XXIV - Veterinary medicine
XXIV.f - Veterinary: Exogenous lipoid pneumonia

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.w I - Interstitial/parenchymal lung disease
I.w - Rapidly progressive ILD/pulmonary fibrosis (Hamman-Rich syndrome) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.a III - Pulmonary/alveolar hemorrhage
III.a - Alveolar hemorrhage, diffuse (DAH) III.b III - Pulmonary/alveolar hemorrhage
III.b - Pneumorenal syndrome III.d III - Pulmonary/alveolar hemorrhage
III.d - Alveolar hemorrhage, diffuse (ANCA-positive/-related) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma IV.c IV - Airway involvement
IV.c - Obliterative bronchiolitis (a pattern consistent with) (see also IVn, XVx) IV.n IV - Airway involvement
IV.n - Obstructive airway dysfunction (see also IVc, XVx) V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion IX.a IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.a - Diaphragm/inspiratory muscle weakness/paralysis (w/wo ARF) IX.r IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.r - Myasthenia gravis (may cause neuromuscular ARF) X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary/systemic (ANCA-positive) X.ac X - Systemic/Distant conditions, syndromes and reactions
X.ac - Anti-GBM antibody disease (Goodpasture-like or flare of preexisting GS) XI.t XI - Miscellaneous
XI.t - Yellow nail syndrome XV.z XV - Pathology
XV.z - Path: Obliterative (constrictive) broncholitis (see also IVc, IVn) XVII.w XVII - Infections & related conditions
XVII.w - Hypogammaglobulinemia - Antibody deficiency

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.k I - Interstitial/parenchymal lung disease
I.k - Lung nodule or nodules II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.a III - Pulmonary/alveolar hemorrhage
III.a - Alveolar hemorrhage, diffuse (DAH) III.b III - Pulmonary/alveolar hemorrhage
III.b - Pneumorenal syndrome III.d III - Pulmonary/alveolar hemorrhage
III.d - Alveolar hemorrhage, diffuse (ANCA-positive/-related) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma IV.r IV - Airway involvement
IV.r - Airway pigmentation (black, bluish, petechial) V.b V - Pleural and/or pericardial involvement
V.b - Eosinophilic pleural effusion V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericardial effusion (ANA unknown or negative) V.u V - Pleural and/or pericardial involvement
V.u - Eosinophilic pleuritis VI.d VI - Pulmonary vasculopathies
VI.d - Pulmonary vasculitis or capillaritis X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (Pulmonary and/or systemic) - ANCA status unknown or negative) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary/systemic (ANCA-positive) X.x X - Systemic/Distant conditions, syndromes and reactions
X.x - Subclinical ANCA positivity X.ak X - Systemic/Distant conditions, syndromes and reactions
X.ak - Dual MPO-/PR3-ANCA systemic disease/vasculitis XI.n XI - Miscellaneous
XI.n - Neutropenia, agranulocytosis (w/wo infection/sepsis) XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XV.an XV - Pathology
XV.an - Path: Eosinophilic pleuritis

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute, severe (may occasion an ARDS picture) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis (Not otherwise specified) I.m I - Interstitial/parenchymal lung disease
I.m - ILD with a granulomatous component I.q I - Interstitial/parenchymal lung disease
I.q - Pulmonary nodulosis I.w I - Interstitial/parenchymal lung disease
I.w - Rapidly progressive ILD/pulmonary fibrosis (Hamman-Rich syndrome) I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis III.a III - Pulmonary/alveolar hemorrhage
III.a - Alveolar hemorrhage, diffuse (DAH) III.d III - Pulmonary/alveolar hemorrhage
III.d - Alveolar hemorrhage, diffuse (ANCA-positive/-related) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) IX.q IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.q - Obstructive sleep apnea IX.t IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.t - CNS involvement/dysfunction/damage X.b X - Systemic/Distant conditions, syndromes and reactions
X.b - Antiphospholipid antibodies w/wo the APL syndrome X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reactions (may involve skin, throat and/or airways) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (Pulmonary and/or systemic) - ANCA status unknown or negative) X.p X - Systemic/Distant conditions, syndromes and reactions
X.p - Serum sickness-like reaction X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary/systemic (ANCA-positive) X.x X - Systemic/Distant conditions, syndromes and reactions
X.x - Subclinical ANCA positivity X.ae X - Systemic/Distant conditions, syndromes and reactions
X.ae - Antisynthetase antibodies (ASA) - ASA syndrome XII.a XII - Cardiovascular involvement / toxicity
XII.a - Left ventricular dysfunction/failure XV.ba XV - Pathology
XV.ba - Path: Granulomatous lymphadenopathy XVII.a XVII - Infections & related conditions
XVII.a - Respiratory tract infection incl. pneumonia XVII.b XVII - Infections & related conditions
XVII.b - Opportunistic pulmonary/systemic infection XVII.d XVII - Infections & related conditions
XVII.d - Pneumocystis jiroveci pulmonary colonization XVII.e XVII - Infections & related conditions
XVII.e - Pneumocystis jiroveci pneumonia XVII.f XVII - Infections & related conditions
XVII.f - Tuberculosis, miliary XVII.g XVII - Infections & related conditions
XVII.g - Tuberculosis (pulmonary, extrapulmonary, reactivation or de novo) XVII.h XVII - Infections & related conditions
XVII.h - Nontuberculous pulmonary mycobacterial infection/superinfection XVII.m XVII - Infections & related conditions
XVII.m - Fungal airway infection XVII.n XVII - Infections & related conditions
XVII.n - Legionella pneumophila pneumonia XVII.q XVII - Infections & related conditions
XVII.q - Viral pneumonia XVII.r XVII - Infections & related conditions
XVII.r - Fungal infection (pulmonary/extrapulmonary) XVII.v XVII - Infections & related conditions
XVII.v - Strongyloides stercoralis hyperinfection (w/wo DAH) XVII.y XVII - Infections & related conditions
XVII.y - Cryptococcus pulmonary infection XVII.z XVII - Infections & related conditions
XVII.z - Histoplamosis (reactivation) XVII.ab XVII - Infections & related conditions
XVII.ab - Protozoan infection (incl. leishmaniasis) XVII.ak XVII - Infections & related conditions
XVII.ak - Mycobacterium leprae infection (Leprosy)

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.f I - Interstitial/parenchymal lung disease
I.f - Acute fibrinous organizing pneumonia (AFOP) II.a II - Pulmonary edema - Acute lung injury - ARDS
II.a - Pulmonary edema, noncardiogenic (NCPE) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRESS - DRESS-like reaction X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity - Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reactions (may involve skin, throat and/or airways) X.x X - Systemic/Distant conditions, syndromes and reactions
X.x - Subclinical ANCA positivity XIV.a XIV - Hemoglobinopathies - Abnormal hemoglobin states (acquired)
XIV.a - Methemoglobinemia