ICD-10 Code K52.29 – Other allergic and dietetic gastroenteritis and colitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K52.29 – Other allergic and dietetic gastroenteritis and colitis
What it is
K52.29 identifies gastroenteritis or colitis caused by an allergic or dietetic trigger that is not otherwise classified. Use it when documentation links intestinal inflammation to food-related or other dietary allergy.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include abdominal pain, diarrhea, nausea, vomiting, or colitis symptoms after exposure to a suspected allergen or diet-related trigger.
When to use this code
Use K52.29 when the provider documents allergic or dietetic gastroenteritis or colitis and does not name a more specific diagnosis. It may apply when a food trigger is identified, but the record does not support a different coded cause. Confirm that the condition is gastrointestinal and not a separate food allergy code.
Do not use for
Do not use this code for infectious gastroenteritis, inflammatory bowel disease, or nonspecific abdominal symptoms without a documented allergic or dietetic cause. Check documentation.
Coding tip
Code the condition only when the record clearly links the GI inflammation to an allergic or dietetic cause.