. 2023 Aug 2;23:281. doi: 10.1186/s12890-023-02565-7

Table 2.

Initial Respiratory Diagnosis Prior to Diagnosis of Idiopathic Pulmonary Fibrosis

Diagnosis^*	ICD-10 CCS category	N	%
Other upper respiratory infections	126	20,560	46.63
Acute bronchitis	125	5,571	12.63
Other upper respiratory disease	134	4,407	9.99
Chronic obstructive pulmonary disease and/or bronchiectasis	127; RSP008	3,881	8.80
Pneumonia (except that caused by tuberculosis or sexually transmitted disease, e.g.chlamydial infection)	122	2,721	6.17
Pneumonia (except that caused by tuberculosis)	RSP002	1,115	2.53
Other specified upper respiratory infections	RSP006	1,036	2.35
Sinusitis	RSP001	760	1.72
Other lower respiratory disease	133	717	1.63
Other specified and unspecified lower respiratory disease	RSP016	669	1.52
Asthma	128; RSP009	624	1.42
	RSP008
Pleurisy; pneumothorax; pulmonary collapse	130	505	1.15
Acute bronchitis	RSP005	375	0.85
Influenza	123; RSP003	253	0.57
Other specified and unspecified upper respiratory disease	RSP007	238	0.54
Bacterial infections	INF003	215	0.49
Allergic reactions	INJ031	137	0.31
Acute and chronic tonsillitis	124	66	0.15
Lung disease due to external agents	132	53	0.12
Respiratory failure; insufficiency; arrest (adult)	131	46	0.10
Pleurisy pleural effusion and pulmonary collapse	RSP011	43	0.10
Viral infection	INF008	37	0.08
Aspiration pneumonitis; food/vomitus	129	14	0.03
Respiratory failure; insufficiency; arrest	RSP012	12	0.03