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K52.81

K52.81: Eosinophilic gastritis or gastroenteritis

Billable / specific codeICD-10-CM

K52.81 is a billable, specific ICD-10-CM code for eosinophilic gastritis or gastroenteritis. It is valid for submission on a claim.

Check K52.81 with the rest of the claim: free scrubber

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • eosinophilic esophagitis (K20.0)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Eosinophilic enteritis

Other codes that can never be billed with K52.81

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • K29Gastritis and duodenitis

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

K52.81 is named in 12 Medicare coverage policies: 12 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A55937Billing and Coding: Diagnostic Colonoscopy
  • A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization
  • A56421Billing and Coding: CT of the Abdomen and Pelvis
  • A56456Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy

Alphabetic index entries that lead here

  • Enteritis›eosinophilic
  • Gastritis›eosinophilic
  • Gastroenteritis›eosinophilic
  • Enteritis›allergic›with›eosinophilic gastritis or gastroenteritis
  • Gastroenteritis›allergic›with›eosinophilic gastritis or gastroenteritis

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under K52.8

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.