ICD-10 · PDGM grouping
A28 Other zoonotic bacterial diseases, not elsewhere classified
All 5 codes in the A28 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
5
Can lead a claim
4
Cannot lead a claim
1
What CMS assigns to A28
4 of the 5 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases; 1 is assigned no clinical group. None of the 5 is assigned a comorbidity subgroup. 4 of the 5 can lead a claim.
Every code in A28
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 |
|---|---|---|---|---|
| A28.0 | Pasteurellosis | Can lead a claim | K | None |
| A28.1 | Cat-scratch disease | Can lead a claim | K | None |
| A28.2 | Extraintestinal yersiniosis | Can lead a claim | K | None |
| A28.8 | Other specified zoonotic bacterial diseases, not elsewhere classifiedCMS: Oth zoonotic bacterial diseases, not elsewhere classified | Can lead a claim | K | None |
| A28.9 | Zoonotic bacterial disease, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | 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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