ICD-10 Code for Dysentery
Also indexed as (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical)
The ICD-10-CM code for dysentery is A09 — Infectious gastroenteritis and colitis, unspecified. This is the code the Alphabetic Index gives for dysentery with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
A09 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which dysentery code should you use?
The Alphabetic Index lists 22 codes under Dysentery, dysenteric. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| abscess, liver | A06.4 | Amebic liver abscess | |
| amebic | A06.0 | Acute amebic dysentery | |
| arthritis | A09 | Infectious gastroenteritis and colitis, unspecified | |
| bacillary | A03.9 | Shigellosis, unspecified | |
| balantidial | A07.0 | Balantidiasis | |
| Balantidium coli | A07.0 | Balantidiasis | |
| Boyd's | A03.2 | Shigellosis due to Shigella boydii | |
| candidal | B37.82 | Candidal enteritis | |
| Chilomastix | A07.8 | Other specified protozoal intestinal diseases | |
| Chinese | A03.9 | Shigellosis, unspecified | |
| coccidial | A07.3 | Isosporiasis | |
| Dientamoeba | A07.8 | Other specified protozoal intestinal diseases | |
| Embadomonas | A07.8 | Other specified protozoal intestinal diseases | |
| Flexner-Boyd | A03.2 | Shigellosis due to Shigella boydii | |
| Flexner's | A03.1 | Shigellosis due to Shigella flexneri | |
| Giardia lamblia | A07.1 | Giardiasis [lambliasis] | |
| Hiss-Russell | A03.1 | Shigellosis due to Shigella flexneri | |
| Lamblia | A07.1 | Giardiasis [lambliasis] | |
| leishmanial | B55.0 | Visceral leishmaniasis | |
| metazoal | B82.0 | Intestinal helminthiasis, unspecified | |
| monilial | B37.82 | Candidal enteritis | |
| protozoal | A07.9 | Protozoal intestinal disease, unspecified | |
| Salmonella | A02.0 | Salmonella enteritis | |
| schistosomal | B65.1 | Schistosomiasis due to Schistosoma mansoni [intestinal schistosomiasis] | |
| Schmitz | A03.0 | Shigellosis due to Shigella dysenteriae | |
| Shiga | A03.0 | Shigellosis due to Shigella dysenteriae | |
| Sonne | A03.3 | Shigellosis due to Shigella sonnei | |
| strongyloidiasis | B78.0 | Intestinal strongyloidiasis | |
| trichomonal | A07.8 | Other specified protozoal intestinal diseases | |
| viral | A08.4 | Viral intestinal infection, unspecified |
Dysentery arthritis
| bacillary | A03.9 | Shigellosis, unspecified |
Dysentery bacillary
| arthritis | A03.9 | Shigellosis, unspecified | |
| Boyd | A03.2 | Shigellosis due to Shigella boydii | |
| Flexner | A03.1 | Shigellosis due to Shigella flexneri | |
| Schmitz | A03.0 | Shigellosis due to Shigella dysenteriae | |
| Shiga | A03.0 | Shigellosis due to Shigella dysenteriae | |
| Shigella | A03.9 | Shigellosis, unspecified | |
| Sonne | A03.3 | Shigellosis due to Shigella sonnei | |
| specified type NEC | A03.8 | Other shigellosis | |
| Shigella › boydii | A03.2 | Shigellosis due to Shigella boydii | |
| Shigella › dysenteriae | A03.0 | Shigellosis due to Shigella dysenteriae | |
| Shigella › flexneri | A03.1 | Shigellosis due to Shigella flexneri | |
| Shigella › group A | A03.0 | Shigellosis due to Shigella dysenteriae | |
| Shigella › group B | A03.1 | Shigellosis due to Shigella flexneri | |
| Shigella › group C | A03.2 | Shigellosis due to Shigella boydii | |
| Shigella › group D | A03.3 | Shigellosis due to Shigella sonnei | |
| Shigella › sonnei | A03.3 | Shigellosis due to Shigella sonnei | |
| Shigella › specified type NEC | A03.8 | Other shigellosis |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources