ICD-10 · PDGM grouping
A01 Typhoid and paratyphoid fevers
All 11 codes in the A01 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
11
Can lead a claim
11
Cannot lead a claim
0
What CMS assigns to A01
All 11 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases (10) and Neuro Rehabilitation (1). None of the 11 is assigned a comorbidity subgroup. Every code can lead a claim.
Every code in A01
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 |
|---|---|---|---|---|
| A01.0 Typhoid fever | ||||
| A01.00 | Typhoid fever, unspecified | Can lead a claim | K | None |
| A01.01 | Typhoid meningitis | Can lead a claim | B | None |
| A01.02 | Typhoid fever with heart involvement | Can lead a claim | K | None |
| A01.03 | Typhoid pneumonia | Can lead a claim | K | None |
| A01.04 | Typhoid arthritis | Can lead a claim | K | None |
| A01.05 | Typhoid osteomyelitis | Can lead a claim | K | None |
| A01.09 | Typhoid fever with other complications | Can lead a claim | K | None |
| A01.1 | Paratyphoid fever A | Can lead a claim | K | None |
| A01.2 | Paratyphoid fever B | Can lead a claim | K | None |
| A01.3 | Paratyphoid fever C | Can lead a claim | K | None |
| A01.4 | Paratyphoid fever, 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