ICD-10 Code K31.A15 – Gastric intestinal metaplasia without dysplasia, involving multiple sites (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K31.A15 – Gastric intestinal metaplasia without dysplasia, involving multiple sites
What it is
This code identifies intestinal metaplasia in the stomach at more than one site, with no dysplasia reported. It means gastric lining cells have changed to a more intestinal type, but there is no precancerous cellular change documented.
Clinical signs
Clinical features vary; refer to documentation. Diagnosis is usually based on endoscopic biopsy showing intestinal metaplasia in multiple gastric locations and explicit notation that dysplasia is absent.
When to use this code
Use this code when the pathology report or provider documentation states gastric intestinal metaplasia without dysplasia and specifies involvement of multiple sites. It is appropriate for follow-up of biopsy-confirmed stomach findings, not for vague gastritis descriptions. Check documentation if the number of sites or presence of dysplasia is unclear.
Do not use for
Do not use this code if dysplasia is present, if the metaplasia is limited to a single site, or if the report only says “gastric metaplasia” without confirming intestinal metaplasia. Check documentation for the exact pathology wording.
Coding tip
Match the code to the biopsy report wording, especially the site count and the absence of dysplasia.