ICD-10 · PDGM grouping
G03 Meningitis due to other and unspecified causes
All 5 codes in the G03 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
3
Cannot lead a claim
2
What CMS assigns to G03
3 of the 5 codes group to Neuro Rehabilitation; 2 are assigned no clinical group. None of the 5 is assigned a comorbidity subgroup. 3 of the 5 can lead a claim.
Every code in G03
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 |
|---|---|---|---|---|
| G03.0 | Nonpyogenic meningitis | Can lead a claim | B | None |
| G03.1 | Chronic meningitis | Can lead a claim | B | None |
| G03.2 | Benign recurrent meningitis [Mollaret] | Can lead a claim | B | None |
| G03.8 | Meningitis due to other specified causes | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| G03.9 | Meningitis, 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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