2026 ICD-10-CM Diagnosis Code K29.31Chronic superficial gastritis with bleeding
ICD-10-CM Codes›K00–K95›K20-K31›K29
- Billable — Valid for Submission
- MCC — Major Complication or Comorbidity
- Chronic Condition
K29.31 is a billable ICD-10-CM diagnosis code for chronic superficial gastritis with bleeding. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 377 through 379. As a secondary diagnosis, it counts as a major complication or comorbidity (MCC) and places an inpatient stay in the highest severity level of its MS-DRG family. It does not count, however, when the principal diagnosis is one of 72 closely related codes. Coders also document this condition as gastric hemorrhage due to chronic superficial gastritis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Gastritis and duodenitis and Gastrointestinal hemorrhage.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Gastric hemorrhage due to chronic superficial gastritis
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Gastrointestinal Bleeding
Your digestive or gastrointestinal (GI) tract includes the esophagus, stomach, small intestine, large intestine or colon, rectum, and anus. Bleeding can come from any of these areas. The amount of bleeding can be so small that only a lab test can find it.
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Convert K29.31 to ICD-9-CMHistory
Code HistoryHistory
Questions About K29.31Overview
What is the ICD-10 code for chronic superficial gastritis with bleeding?
The ICD-10-CM code for chronic superficial gastritis with bleeding is K29.31 (sometimes written as K2931). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is K29.31 (Chronic superficial gastritis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report chronic superficial gastritis with bleeding on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does K29.31 group to?
When chronic superficial gastritis with bleeding is the principal diagnosis on an inpatient stay, it groups to MS-DRG 377, 378, 379, with relative weights from 0.6304 to 1.8280 depending on complications. Higher weights mean higher Medicare reimbursement.
Is K29.31 a CC or MCC?
CMS lists K29.31 as an MCC (major complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It does not count when the principal diagnosis is one of the 72 closely related codes in its exclusion list.
What is the ICD-9 equivalent of K29.31?
Under the General Equivalence Mappings, chronic superficial gastritis with bleeding converts to ICD-9-CM 535.11 (atrph gastritis w hmrhg) and 535.41 (oth spf gastrt w hmrhg). The mapping is approximate, so confirm the match fits the documentation.
