2026 ICD-10-CM Diagnosis Code K26.7Chronic duodenal ulcer without hemorrhage or perforation

ICD-10-CM Codes›K00–K95›K20-K31›K26

ICD-10-CM K26.7
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K26.7 is a billable ICD-10-CM diagnosis code for chronic duodenal ulcer without hemorrhage or perforation. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 380 through 384. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Gastroduodenal ulcer.

Code Identity

ICD-10-CM Code
K26.7
Billable Status
Yes — Valid for Submission
Code Describes
Chronic duodenal ulcer without hemorrhage or perforation
Short Description
Chronic duodenal ulcer without hemorrhage or perforation
Same as the full description in the CMS dataset.
Parent Code
K26
Duodenal ulcer

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK20-K31Diseases of esophagus, stomach and duodenum
CategoryK26Duodenal ulcer
This CodeK26.7Chronic duodenal ulcer without hemorrhage or perforation

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic duodenal ulcer
  • Chronic duodenal ulcer with obstruction
  • Chronic duodenal ulcer without hemorrhage AND without perforation
  • Chronic duodenal ulcer without hemorrhage AND without perforation but with obstruction
  • Chronic duodenal ulcer without hemorrhage, without perforation AND without obstruction
  • Chronic peptic ulcer without hemorrhage AND without perforation
  • Chronic peptic ulcer without hemorrhage, without perforation AND without obstruction
  • Duodenal ulcer without hemorrhage AND without perforation
  • Duodenal ulcer without hemorrhage AND without perforation but with obstruction
  • Duodenal ulcer without hemorrhage, without perforation AND without obstruction
  • Peptic ulcer without hemorrhage, without perforation AND without obstruction

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Ulcer, ulcerated, ulcerating, ulceration, ulcerative
      • duodenum, duodenal (eroded) (peptic)
        • chronic (erosive)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DIG005
Gastroduodenal ulcer
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Duodenal Ulcer

    a peptic ulcer located in the duodenum.

Patient EducationClinical

Peptic Ulcer

A peptic ulcer is a sore in the lining of your stomach or your duodenum, the first part of your small intestine. A burning stomach pain is the most common symptom. The pain:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert K26.7 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
532.70 Chr duodenal ulcer NOS
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K26.7Overview

Is K26.7 (Duodenal ulcer) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report chronic duodenal ulcer without hemorrhage or perforation on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K26.7 group to?

When chronic duodenal ulcer without hemorrhage or perforation is the principal diagnosis on an inpatient stay, it groups to MS-DRG 380, 381, 382, 383, 384, with relative weights from 0.8006 to 1.9622 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of K26.7?

Under the General Equivalence Mappings, chronic duodenal ulcer without hemorrhage or perforation converts to ICD-9-CM 532.70 (chr duodenal ulcer NOS). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.