ICD-10 · PDGM grouping
A20-A28 — Certain zoonotic bacterial diseases
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.2.26.
Codes in range
47
No clinical group
1
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
44 of the 47 codes in A20-A28 group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases, but the range is not uniform — it spreads across 3 clinical groups. A further 1 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Code families in A20-A28
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
Every code in A20-A28
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| A200 | Bubonic plague | K | Can lead a claim |
| A201 | Cellulocutaneous plague | K | Can lead a claim |
| A202 | Pneumonic plague | K | Can lead a claim |
| A203 | Plague meningitis | K | Can lead a claim |
| A207 | Septicemic plague | K | Can lead a claim |
| A208 | Other forms of plague | K | Can lead a claim |
| A209 | Plague, unspecified | K | Can lead a claim |
| A210 | Ulceroglandular tularemia | K | Can lead a claim |
| A211 | Oculoglandular tularemia | K | Can lead a claim |
| A212 | Pulmonary tularemia | K | Can lead a claim |
| A213 | Gastrointestinal tularemia | K | Can lead a claim |
| A217 | Generalized tularemia | K | Can lead a claim |
| A218 | Other forms of tularemia | K | Can lead a claim |
| A219 | Tularemia, unspecified | K | Can lead a claim |
| A220 | Cutaneous anthrax | K | Can lead a claim |
| A221 | Pulmonary anthrax | K | Can lead a claim |
| A222 | Gastrointestinal anthrax | K | Can lead a claim |
| A227 | Anthrax sepsis | K | Can lead a claim |
| A228 | Other forms of anthrax | K | Can lead a claim |
| A229 | Anthrax, unspecified | K | Can lead a claim |
| A230 | Brucellosis due to Brucella melitensis | K | Can lead a claim |
| A231 | Brucellosis due to Brucella abortus | K | Can lead a claim |
| A232 | Brucellosis due to Brucella suis | K | Can lead a claim |
| A233 | Brucellosis due to Brucella canis | K | Can lead a claim |
| A238 | Other brucellosis | K | Can lead a claim |
| A239 | Brucellosis, unspecified | K | Can lead a claim |
| A240 | Glanders | C | Can lead a claim |
| A241 | Acute and fulminating melioidosis | K | Can lead a claim |
| A242 | Subacute and chronic melioidosis | K | Can lead a claim |
| A243 | Other melioidosis | K | Can lead a claim |
| A249 | Melioidosis, unspecified | K | Can lead a claim |
| A250 | Spirillosis | K | Can lead a claim |
| A251 | Streptobacillosis | K | Can lead a claim |
| A259 | Rat-bite fever, unspecified | K | Can lead a claim |
| A260 | Cutaneous erysipeloid | K | Can lead a claim |
| A267 | Erysipelothrix sepsis | K | Can lead a claim |
| A268 | Other forms of erysipeloid | K | Can lead a claim |
| A269 | Erysipeloid, unspecified | K | Can lead a claim |
| A270 | Leptospirosis icterohemorrhagica | K | Can lead a claim |
| A2781 | Aseptic meningitis in leptospirosis | B | Can lead a claim |
| A2789 | Other forms of leptospirosis | K | Can lead a claim |
| A279 | Leptospirosis, unspecified | K | Can lead a claim |
| A280 | Pasteurellosis | K | Can lead a claim |
| A281 | Cat-scratch disease | K | Can lead a claim |
| A282 | Extraintestinal yersiniosis | K | Can lead a claim |
| A288 | Oth zoonotic bacterial diseases, not elsewhere classified | K | Can lead a claim |
| A289 | Zoonotic bacterial disease, unspecified | None | Cannot lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. 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