ICD-10 · PDGM grouping
B39 Histoplasmosis
All 7 codes in the B39 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
7
Cannot lead a claim
0
What CMS assigns to B39
All 7 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases. None of the 7 is assigned a comorbidity subgroup. Every code can lead a claim. CMS attaches a code-first note to all 7.
Code first
CMS grouper convention 4, on all 7 codes. Code first:
- associated AIDS (B20)
Every code in B39
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 |
|---|---|---|---|---|
| B39.0 | Acute pulmonary histoplasmosis capsulati | Can lead a claim, code first applies | K | None |
| B39.1 | Chronic pulmonary histoplasmosis capsulati | Can lead a claim, code first applies | K | None |
| B39.2 | Pulmonary histoplasmosis capsulati, unspecified | Can lead a claim, code first applies | K | None |
| B39.3 | Disseminated histoplasmosis capsulati | Can lead a claim, code first applies | K | None |
| B39.4 | Histoplasmosis capsulati, unspecified | Can lead a claim, code first applies | K | None |
| B39.5 | Histoplasmosis duboisii | Can lead a claim, code first applies | K | None |
| B39.9 | Histoplasmosis, unspecified | Can lead a claim, code first applies | K | 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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