I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) III.c III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.c - Hemoptysis III.e III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.e - Pulmonary hematoma III.k III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.k - Epistaxis IV.af IV - Airway involvement
IV.af - Calcification of tracheobronchial cartilaginous rings V.e V - Pleural and/or pericardial involvement
V.e - Hemothorax - Serosanguineous pleural effusion V.n V - Pleural and/or pericardial involvement
V.n - Hemopericardium - Bloody pericardial effusion VII.g VII - Mediastinal involvement
VII.g - Hemomediastinum - Mediastinal hematoma VIII.a VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) VIII.b VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.b - Hematoma of/around central airway wall potentially causing UAO VIII.q VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.q - Tongue involvement (edema, glossitis, hematoma) VIII.u VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.u - Vocal cord hematoma VIII.v VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.v - Retropharyngeal hematoma (may cause UAO) IX.x IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.x - Thoracic epidural or spinal hematoma X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction XI.k XI - Miscellaneous
XI.k - Esophageal hematoma (may cause chest pain and/or tracheal compression) XI.am XI - Miscellaneous
XI.am - Rectus abdominis hematoma XII.ar XII - Cardiovascular involvement / toxicity
XII.ar - Calcification of the coronary artery walls or atheroma XIX.d XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.d - BAL: Gross or microscopic bleeding/hemorrhage XIX.e XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.e - BAL: Stainable iron in macrophages XXIV.e XXIV - Veterinary medicine
XXIV.e - Veterinary: Tracheal hemorrhage, stenosis, collapse

III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) III.c III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.c - Hemoptysis III.m III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.m - Coagulopathy V.n V - Pleural and/or pericardial involvement
V.n - Hemopericardium - Bloody pericardial effusion VI.a VI - Pulmonary vasculopathies
VI.a - Pulmonary embolism - Venous thrombosis/thromboembolism VIII.a VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) VIII.b VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.b - Hematoma of/around central airway wall potentially causing UAO XXIV.d XXIV - Veterinary medicine
XXIV.d - Veterinary: Pulmonary bleeding (hemoptysis, alveolar hemorrhage) XXIV.e XXIV - Veterinary medicine
XXIV.e - Veterinary: Tracheal hemorrhage, stenosis, collapse