ICDcodes.org
FY2027

ICD-10 Code for Gastroenteritis

Also indexed as (acute) (chronic) (noninfectious)

The ICD-10-CM code for gastroenteritis is K52.9 — Noninfective gastroenteritis and colitis, unspecified. This is the code the Alphabetic Index gives for gastroenteritis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).

BillableUnspecified

K52.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.

Which gastroenteritis code should you use?

The Alphabetic Index lists 15 codes under Gastroenteritis. 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

allergicK52.29Other allergic and dietetic gastroenteritis and colitis
dieteticK52.29Other allergic and dietetic gastroenteritis and colitis
drug-inducedK52.1Toxic gastroenteritis and colitis
eosinophilicK52.81Eosinophilic gastritis or gastroenteritis
epidemicA09Infectious gastroenteritis and colitis, unspecified
food hypersensitivityK52.29Other allergic and dietetic gastroenteritis and colitis
noninfectiousK52.9Noninfective gastroenteritis and colitis, unspecified
rotaviralA08.0Rotaviral enteritis
SalmonellaA02.0Salmonella enteritis
toxicK52.1Toxic gastroenteritis and colitis
viral NECA08.4Viral intestinal infection, unspecified

Gastroenteritis due to

CryptosporidiumA07.2Cryptosporidiosis
drugsK52.1Toxic gastroenteritis and colitis
radiationK52.0Gastroenteritis and colitis due to radiation

Gastroenteritis noninfectious

specified NECK52.89Other specified noninfective gastroenteritis and colitis

Gastroenteritis viral NEC

acute infectiousA08.39Other viral enteritis
infantileA08.39Other viral enteritis
Norwalk agentA08.11Acute gastroenteropathy due to Norwalk agent
rotaviralA08.0Rotaviral enteritis
severe of infantsA08.39Other viral enteritis
specified type NECA08.39Other viral enteritis
acute infectious › type NorwalkA08.11Acute gastroenteropathy due to Norwalk agent

Gastroenteritis allergic

with › eosinophilic gastritis or gastroenteritisK52.81Eosinophilic gastritis or gastroenteritis
with › food protein-induced enterocolitis syndromeK52.21Food protein-induced enterocolitis syndrome
with › food protein-induced enteropathyK52.22Food protein-induced enteropathy

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