Table 2. Secondary diagnoses when bronchiectasis is the primary diagnosis during hospitalization, classified by putative infectious and non-infectious complications as well as diagnoses commonly associated with bronchiectasis (n = 12,251).

ICD-10	Secondary diagnosis			Frequency	Percentage
Putative infectious and non-infectious bronchiectasis-associated complications
J96		Respiratory failure	2,831		23.1
J20–J22, J40–J42		Bronchitis and bronchiolitis	1,955		16.0
R04		Hemoptysis	1,831		14.9
J09–J18		Influenza and pneumonia	1,074		8.8
I27		Pulmonary heart diseases	598		4.8
R64		Cachexia	358		2.9
Diagnoses commonly associated with bronchiectasis
J43–J44		COPD and emphysema		4,799	39.2
J45–J46		Asthma		787	6.4
J32		Chronic sinusitis		461	3.8
K21		Gastroesophageal reflux disease		412	3.4
J84		Interstitial lung disease		336	2.7
D38		Airway or chest neoplasm of uncertain or unknown behavior		320	2.6
M05–M06		Rheumatoid arthritis		254	2.1
D80–D84		Primary immunodeficiencies		247	2.0
K50–K52		Inflammatory bowel diseases		167	1.4
B44		Aspergillosis		130	1.1
M30–M36		Systemic connective tissue diseases		94	0.8
Q30–Q34		Congenital malformations of the respiratory systema		89	0.7
D86		Sarcoidosis		92	0.8
A15–A19		Tuberculosis		62	0.5
J60–J65		Pneumoconioses		48	0.4
A31		Nontuberculous mycobacteria		54	0.4
E84		Cystic Fibrosis		34	0.3

^aIncluding primary ciliary dyskinesia. COPD: chronic obstructive pulmonary disease; ICD-10: International Classification of Diseases, 10th revision.