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ICD-10-CM 2027 diagnosis code

K31.82Dieulafoy lesion (hemorrhagic) of stomach and duodenum

✓ Billable / specificMCC — major complication/comorbidity

K31.82 is a valid, billable ICD-10-CM code for dieulafoy lesion (hemorrhagic) of stomach and duodenum. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About K31.82

K31.82 is the ICD-10-CM diagnosis code for Dieulafoy lesion (hemorrhagic) of stomach and duodenum. It belongs to category K31 (other diseases of stomach and duodenum), block K20-K31 (diseases of esophagus, stomach and duodenum) and chapter 11 (diseases of the digestive system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within K31.8 (other specified diseases of stomach and duodenum), K31.82 is specifically for Dieulafoy lesion (hemorrhagic) of stomach and duodenum. Related codes cover Angiodysplasia of stomach and duodenum (K31.81), Achlorhydria (K31.83), Gastroparesis (K31.84) and other diseases of stomach and duodenum (K31.89).

The conditions in its Excludes2 note aren't part of K31.82, but may be coded alongside it if the patient has both: Dieulafoy lesion of intestine (K63.81).

As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 377 (Gastrointestinal Hemorrhage with MCC, relative weight 1.8127), DRG 378 (Gastrointestinal Hemorrhage with CC, relative weight 0.9732) and DRG 379 (Gastrointestinal Hemorrhage without CC/MCC, relative weight 0.6381), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 537.84 (Dieulafoy lesion (hemorrhagic) of stomach and duodenum).

Coding notes

Excludes2Not included here — may be reported together if both conditions exist
  • Dieulafoy lesion of intestine (K63.81)

Notes that apply from higher levels

Instructions written at a parent level also apply to K31.82.

› From K31 Other diseases of stomach and duodenum
Includes
  • functional disorders of stomach
Excludes2

Broader instructions also apply from K20-K31 Diseases of esophagus, stomach and duodenum and Chapter 11: Diseases of the digestive system.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to K31.82.

Codes whose notes reference K31.82

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 537.84Dieulafoy lesion (hemorrhagic) of stomach and duodenumexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about K31.82

Is K31.82 billable?

Yes. K31.82 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can K31.82 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict K31.82 as a principal diagnosis.

Is K31.82 a CC or MCC?

K31.82 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does K31.82 group to?

K31.82 is used in the MS-DRG v44.0 logic for MS-DRG 377 (Gastrointestinal Hemorrhage with MCC), MS-DRG 378 (Gastrointestinal Hemorrhage with CC) and MS-DRG 379 (Gastrointestinal Hemorrhage without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for K31.82?

The CMS General Equivalence Mappings map K31.82 to ICD-9-CM 537.84.