ICD-10-CM 2027
ICD-10 code for eosinophilic gastroenteritis
From the official ICD-10-CM alphabetic index entry “Gastroenteritis (acute) (chronic) (noninfectious) › eosinophilic”. Page updated September 29, 2026.
About coding eosinophilic gastroenteritis
The ICD-10-CM code for eosinophilic gastroenteritis is K52.81 (Eosinophilic gastritis or gastroenteritis).
Within K52.8 (other specified noninfective gastroenteritis and colitis), K52.81 is specifically for eosinophilic gastritis or gastroenteritis. Related codes cover eosinophilic colitis (K52.82), microscopic colitis (K52.83) and other specified noninfective gastroenteritis and colitis (K52.89).
The conditions in its Excludes2 note aren't part of K52.81, but may be coded alongside it if the patient has both: eosinophilic esophagitis (K20.0).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about eosinophilic gastroenteritis ICD-10 codes
What is the ICD-10 code for eosinophilic gastroenteritis?
- K52.81 — Eosinophilic gastritis or gastroenteritis.
Is K52.81 billable?
- Yes. K52.81 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K52.81 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K52.81 as a principal diagnosis.
Is K52.81 a CC or MCC?
- No. K52.81 is neither a CC nor an MCC under MS-DRG v44.0.