ICD-10-CM 2027
ICD-10 code for pleura cavity disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › pleura (cavity)”. Page updated September 29, 2026.
About coding pleura cavity disease
The ICD-10-CM code for pleura cavity disease is J94.9 (Pleural condition, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on J94.9.
Within J94, choose J94.9 (Pleural condition, unspecified) only when documentation doesn't support a more specific option: Chylous effusion (J94.0), Fibrothorax (J94.1), hemothorax (J94.2) and other specified pleural conditions (J94.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 193 (Simple Pneumonia and Pleurisy with MCC, relative weight 1.2825), DRG 194 (Simple Pneumonia and Pleurisy with CC, relative weight 0.7888) and DRG 195 (Simple Pneumonia and Pleurisy without CC/MCC, relative weight 0.6063), in MDC 04 (Diseases and Disorders of the Respiratory System), 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 pleura cavity disease codes (official index)
- specified NEC J94.8 — Other specified pleural conditions
Common questions about pleura cavity disease ICD-10 codes
What is the ICD-10 code for pleura cavity disease?
- J94.9 — Pleural condition, unspecified. More specific codes apply when the documentation supports them: J94.8.
Is J94.9 billable?
- Yes. J94.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J94.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J94.9 as a principal diagnosis.
Is J94.9 a CC or MCC?
- No. J94.9 is neither a CC nor an MCC under MS-DRG v44.0.