ICD-10-CM 2027
ICD-10 code for Hamman's syndrome
From the official ICD-10-CM alphabetic index entry “Syndrome › Hamman's”. Page updated September 29, 2026.
About coding Hamman's syndrome
The ICD-10-CM code for Hamman's syndrome is J98.19 (Other pulmonary collapse).
Within J98.1, choose J98.19 (Other pulmonary collapse) only when documentation doesn't support a more specific option: atelectasis (J98.11).
Use an additional code to identify: exposure to environmental tobacco smoke (Z77.22), exposure to tobacco smoke in the perinatal period (P96.81), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31), tobacco dependence (F17.-) and 1 more.
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about Hamman's syndrome ICD-10 codes
What is the ICD-10 code for Hamman's syndrome?
- J98.19 — Other pulmonary collapse.
Is J98.19 billable?
- Yes. J98.19 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J98.19 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J98.19 as a principal diagnosis.
Is J98.19 a CC or MCC?
- J98.19 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.