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
What this means — in plain language
MedlinePlus · NIHA 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: Starts between meals or during the night Briefly stops if you eat or take antacids Lasts for minutes to hours Comes and goes for several days or weeks Peptic ulcers happen when the acids that help you digest food damage the walls of the stomach…
Read more about Peptic Ulcer at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
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.-)
Medications indicated for this condition
FDA labeling- Esomeprazole›
- Sodium BicarbonateProton Pump Inhibitor [EPC]›
- FamotidineHistamine-2 Receptor Antagonist [EPC]›
- Rabeprazole›
- LansoprazoleProton Pump Inhibitor [EPC]›
- OmeprazoleProton Pump Inhibitor [EPC]›
- SucralfateAluminum Complex [EPC]›
- Ibuprofen and FamotidineHistamine-2 Receptor Antagonist [EPC]›
- Phenobarbital, Hyoscyamine Sulfate, Atropine Sulfate, Scopolamine Hydrobromide›
- Ranitidine›
- Amoxicillin›
- CimetidineHistamine-2 Receptor Antagonist [EPC]›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
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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