ICD-10 · PDGM grouping
A39 Meningococcal infection
All 15 codes in the A39 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
15
Can lead a claim
15
Cannot lead a claim
0
What CMS assigns to A39
All 15 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases (13) and Neuro Rehabilitation (2). None of the 15 is assigned a comorbidity subgroup. Every code can lead a claim.
Every code in A39
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 |
|---|---|---|---|---|
| A39.0 | Meningococcal meningitis | Can lead a claim | B | None |
| A39.1 | Waterhouse-Friderichsen syndrome | Can lead a claim | K | None |
| A39.2 | Acute meningococcemia | Can lead a claim | K | None |
| A39.3 | Chronic meningococcemia | Can lead a claim | K | None |
| A39.4 | Meningococcemia, unspecified | Can lead a claim | K | None |
| A39.5 Meningococcal heart disease | ||||
| A39.50 | Meningococcal carditis, unspecified | Can lead a claim | K | None |
| A39.51 | Meningococcal endocarditis | Can lead a claim | K | None |
| A39.52 | Meningococcal myocarditis | Can lead a claim | K | None |
| A39.53 | Meningococcal pericarditis | Can lead a claim | K | None |
| A39.8 Other meningococcal infections | ||||
| A39.81 | Meningococcal encephalitis | Can lead a claim | B | None |
| A39.82 | Meningococcal retrobulbar neuritis | Can lead a claim | K | None |
| A39.83 | Meningococcal arthritis | Can lead a claim | K | None |
| A39.84 | Postmeningococcal arthritis | Can lead a claim | K | None |
| A39.89 | Other meningococcal infections | Can lead a claim | K | None |
| A39.9 | Meningococcal infection, unspecified | Can lead a claim | 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.
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue