ICD-10 · PDGM grouping
J93 Pneumothorax and air leak
All 7 codes in the J93 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
7
Can lead a claim
6
Cannot lead a claim
1
What CMS assigns to J93
6 of the 7 codes group to MMTA - Respiratory; 1 is assigned no clinical group. None of the 7 is assigned a comorbidity subgroup. 6 of the 7 can lead a claim. CMS attaches a code-first note to 1 of the 7.
Code first
CMS grouper convention 95, on J93.12. Code first:
- Marfan syndrome (Q87.4-)
- catamenial pneumothorax due to endometriosis (N80.B-)
- cystic fibrosis (E84.-)
- eosinophilic pneumonia (J82.81-J82.82)
- lymphangioleiomyomatosis (J84.81)
- malignant neoplasm of bronchus and lung (C34.-)
- pneumonia due to Pneumocystis carinii (B59)
- secondary malignant neoplasm of lung (C78.0-)
- spontaneous rupture of the esophagus (K22.3)
- underlying condition, such as:
Every code in J93
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| J93.0 | Spontaneous tension pneumothorax | Can lead a claim | L | None |
| J93.1 Other spontaneous pneumothorax | ||||
| J93.11 | Primary spontaneous pneumothorax | Can lead a claim | L | None |
| J93.12 | Secondary spontaneous pneumothorax | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| J93.8 Other pneumothorax and air leak | ||||
| J93.81 | Chronic pneumothorax | Can lead a claim | L | None |
| J93.82 | Other air leak | Can lead a claim | L | None |
| J93.83 | Other pneumothorax | Can lead a claim | L | None |
| J93.9 | Pneumothorax, unspecified | Can lead a claim | L | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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