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 v07.1.26.

OASIS-E2 v1.00.0 · ingested 2026-04-26

Codes in range

No clinical group

A period cannot be grouped from these.

Barred as primary

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.

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	Accepted
A201	Cellulocutaneous plague	K	Accepted
A202	Pneumonic plague	K	Accepted
A203	Plague meningitis	K	Accepted
A207	Septicemic plague	K	Accepted
A208	Other forms of plague	K	Accepted
A209	Plague, unspecified	K	Accepted
A210	Ulceroglandular tularemia	K	Accepted
A211	Oculoglandular tularemia	K	Accepted
A212	Pulmonary tularemia	K	Accepted
A213	Gastrointestinal tularemia	K	Accepted
A217	Generalized tularemia	K	Accepted
A218	Other forms of tularemia	K	Accepted
A219	Tularemia, unspecified	K	Accepted
A220	Cutaneous anthrax	K	Accepted
A221	Pulmonary anthrax	K	Accepted
A222	Gastrointestinal anthrax	K	Accepted
A227	Anthrax sepsis	K	Accepted
A228	Other forms of anthrax	K	Accepted
A229	Anthrax, unspecified	K	Accepted
A230	Brucellosis due to Brucella melitensis	K	Accepted
A231	Brucellosis due to Brucella abortus	K	Accepted
A232	Brucellosis due to Brucella suis	K	Accepted
A233	Brucellosis due to Brucella canis	K	Accepted
A238	Other brucellosis	K	Accepted
A239	Brucellosis, unspecified	K	Accepted
A240	Glanders	C	Accepted
A241	Acute and fulminating melioidosis	K	Accepted
A242	Subacute and chronic melioidosis	K	Accepted
A243	Other melioidosis	K	Accepted
A249	Melioidosis, unspecified	K	Accepted
A250	Spirillosis	K	Accepted
A251	Streptobacillosis	K	Accepted
A259	Rat-bite fever, unspecified	K	Accepted
A260	Cutaneous erysipeloid	K	Accepted
A267	Erysipelothrix sepsis	K	Accepted
A268	Other forms of erysipeloid	K	Accepted
A269	Erysipeloid, unspecified	K	Accepted
A270	Leptospirosis icterohemorrhagica	K	Accepted
A2781	Aseptic meningitis in leptospirosis	B	Accepted
A2789	Other forms of leptospirosis	K	Accepted
A279	Leptospirosis, unspecified	K	Accepted
A280	Pasteurellosis	K	Accepted
A281	Cat-scratch disease	K	Accepted
A282	Extraintestinal yersiniosis	K	Accepted
A288	Oth zoonotic bacterial diseases, not elsewhere classified	K	Accepted
A289	Zoonotic bacterial disease, unspecified	None	Cannot group

Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. 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.

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A20-A28 — Certain zoonotic bacterial diseases

Where these codes group

Every code in A20-A28

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