ICD-10-CM K26: Duodenal ulcer

ICD-10-CM Diagnosis Code (2025)

Official Description for K26

Duodenal ulcer

Coding Notes & Guidelines for K26

Includes Notes
  • erosion (acute) of duodenum
  • duodenum ulcer (peptic)
  • postpyloric ulcer (peptic)
Excludes1: Not Coded Here

peptic ulcer NOS (K27.-)

Use Additional Code
  • code to identify:
  • alcohol abuse and dependence (F10.-)

Child Codes (More Specific Codes for K26):

K26.0 - Acute duodenal ulcer with hemorrhage K26.1 - Acute duodenal ulcer with perforation K26.2 - Acute duodenal ulcer with both hemorrhage and perforation K26.3 - Acute duodenal ulcer without hemorrhage or perforation K26.4 - Chronic or unspecified duodenal ulcer with hemorrhage K26.5 - Chronic or unspecified duodenal ulcer with perforation K26.6 - Chronic or unspecified duodenal ulcer with both hemorrhage and perforation K26.7 - Chronic duodenal ulcer without hemorrhage or perforation K26.9 - Duodenal ulcer, unspecified as acute or chronic, without hemorrhage or perforation

About ICD-10-CM Code K26 (Duodenal ulcer)

ICD-10-CM code K26 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM K26 became effective on October 1, 2024.

This page provides detailed information about K26 - Duodenal ulcer. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Duodenal ulcer.