ICD-10-CM 2027
ICD-10 code for hemothorax
From the official ICD-10-CM alphabetic index entry “Hemothorax (bacterial) (nontuberculous)”. Page updated September 29, 2026.
About coding hemothorax
The ICD-10-CM code for hemothorax is J94.2 (Hemothorax). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J94.2.
Within J94 (other pleural conditions), J94.2 is specifically for hemothorax. Related codes cover Chylous effusion (J94.0), Fibrothorax (J94.1), other specified pleural conditions (J94.8) and pleural condition, unspecified (J94.9).
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.
In MS-DRG v44.0, it is part of the grouping logic for DRG 186 (Pleural Effusion with MCC, relative weight 1.5835), DRG 187 (Pleural Effusion with CC, relative weight 1.0001), DRG 188 (Pleural Effusion without CC/MCC, relative weight 0.6654), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 04 (Diseases and Disorders of the Respiratory System) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific hemothorax codes (official index)
Common questions about hemothorax ICD-10 codes
What is the ICD-10 code for hemothorax?
- J94.2 — Hemothorax. More specific codes apply when the documentation supports them: P54.8, S27.1, S27.2, A15.6.
What is the ICD-10 code for newborn hemothorax?
- P54.8 — Other specified neonatal hemorrhages.
What is the ICD-10 code for traumatic hemothorax?
- S27.1 — Traumatic hemothorax (header code; choose a more specific subcode).
What is the ICD-10 code for tuberculous nec hemothorax?
- A15.6 — Tuberculous pleurisy.
Is J94.2 billable?
- Yes. J94.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J94.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J94.2 as a principal diagnosis.
Is J94.2 a CC or MCC?
- J94.2 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.