2026 ICD-10-CM Diagnosis Code K31.82Dieulafoy lesion (hemorrhagic) of stomach and duodenum
ICD-10-CM Codes›K00–K95›K20-K31›K31
- Billable — Valid for Submission
- MCC — Major Complication or Comorbidity
- Not Chronic
K31.82 is a billable ICD-10-CM diagnosis code for dieulafoy lesion (hemorrhagic) of stomach and duodenum. 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 73 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Gastrointestinal hemorrhage and Other specified and unspecified disorders of stomach and duodenum.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Dieulafoy lesion of small intestine
- Dieulafoy vascular malformation of duodenum
- Dieulafoy vascular malformation of stomach
- Dieulafoy's vascular malformation
- Dieulafoy's vascular malformation of intestine
- Disorder of vascular structure of duodenum
- Duodenal hemorrhage due to Dieulafoy lesion of duodenum
- Gastric hemorrhage due to Dieulafoy lesion of stomach
- Lip ulcer
- Lip ulcer due to caliber persistent artery
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 2 Excludes
- Dieulafoy lesion of intestine K63.81
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
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.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert K31.82 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K31.82Overview
What is the ICD-10 code for dieulafoy lesion (hemorrhagic) of stomach and duodenum?
The ICD-10-CM code for dieulafoy lesion (hemorrhagic) of stomach and duodenum is K31.82 (sometimes written as K3182). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is K31.82 (Other specified diseases of stomach and duodenum) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report dieulafoy lesion (hemorrhagic) of stomach and duodenum on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does K31.82 group to?
When dieulafoy lesion (hemorrhagic) of stomach and duodenum 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 K31.82 a CC or MCC?
CMS lists K31.82 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 73 closely related codes in its exclusion list.
What is the ICD-9 equivalent of K31.82?
Under the General Equivalence Mappings, dieulafoy lesion (hemorrhagic) of stomach and duodenum converts to ICD-9-CM 537.84 (dieulafoy les,stom&duod). The mapping is a direct match.
