Identifying Primary Spontaneous Pneumothorax from Administrative Databases: A Validation Study

Table 1

Conditions identified as potential causes of secondary pneumothorax with corresponding ICD-10-CA codes.

Condition	ICD-10-CA codes
Chronic obstructive pulmonary disease	J40, J410, J411, J418, J42, J431, J432, J438–J441, J961, J982
Thoracic endometriosis	N808
Pneumocystis	B59
Sarcoidosis	D860–D863, D868, D869
Tuberous sclerosis	Q851
Rheumatoid arthritis	M051–M053, M058–M060, M062–M064, M068, M069, M080
Ankylosing spondylitis	M081, M45
Scleroderma	L940-L941
Ehler-Danlos syndrome	Q796
Marfan syndrome	Q874
Langerhans disease	D760, D763
Cystic fibrosis	E840, E841, E848, E849
Interstitial lung disease	J841, J848, J849
Lung neoplasm	C3400, C3401, C3409–C3411, C3419, C342, C3430, C3431, C3439, C3480, C3481, C3489, C3490, C3491, C3499, C780, C783, D022, D023, D024, D174, D143, D381
Chest trauma^†	S202–S204, S207, S208, S2100, S2101, S2110, S2111, S2120, S2121, S2170, S2171, S2180, S2181, S2190, S2191, S22000, S22001, S22010, S22011, S22090, S22091, S22100, S22101, S22200, S22201, S22300, S22301, S22400, S22401, S22410, S22411, S22490, S22491, S22500, S22501, S22800, S22900, S230–S235, S240, S2410–S2413, S2418–S2420, S2428, S2438, S2440, S2448, S2458, S2468, S250–S255, S257–S259, S26000, S26001, S26800, S26801, S26810, S26811, S26880, S26881, S26890, S26891, S27000, S27001, S27100, S27101, S27200, S27201, S27300, S27301, S27310, S27311, S27380, S27381, S27390, S27391, S27400, S27410, S27480, S27490, S27500, S27510, S27511, S27580, S27590, S27600, S27601, S27610, S27611, S27680, S27690, S27700, S27701, S27710, S27711, S27780, S27790, S27791, S27800, S27801, S27810, S27811, S27840, S27841, S27850, S27851, S27860, S27861, S27890, S27891, S27900, S27901, S27980, S27981, S280, S281, S2900, S2908, S297–S299, T001, T008–T011, T0180, T0181, T0190, T0191, T0210, T0211, T0270, T0271, T0280, T0281, T0290, T0291, T031, T039, T041, T047, T048, T049, T058–T065, T068, T07, T080, T081, T090, T091, T095, T098, T099, T140–T149, T792, T797, T798, T799
Foreign bodies^†	T173–T175, T178, T179, T181, T188, T189
Status asthmaticus^†	J4501, J4511, J4581, J4591
Pneumonia^†	J120–J123, J128, J129, J13, J14, J150–J160, J168, J180–J182, J188, J189
Lung abscess^†	J850–J852

Acute conditions (note: all other conditions are considered chronic).