K26
Non-billableDuodenal ulcer
K26 is the ICD-10-CM code for Duodenal ulcer. It is a non-billable category code — use a more specific child code such as K26.0 for billing.
- Status
- Header (non-billable)
- Chapter
- K00-K95
- Subcodes
- 9
- Edition
- FY2026
K00-K95 Diseases of the digestive system
Includes
- •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.-)
Frequently asked questions
- What is ICD-10 code K26?
- K26 is the ICD-10-CM code for "Duodenal ulcer". It falls under K00-K95 Diseases of the digestive system.
- Is K26 a billable code?
- No — K26 is a non-billable header code. Use a more specific child code (such as K26.0) for billing.
- What is excluded from K26?
- Excludes1 (not coded here): peptic ulcer NOS (K27.-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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