ICD-10 K27
Non-Billable HeaderPeptic ulcer, site unspecified
About ICD-10-CM K27
ICD-10-CM code K27 represents Peptic ulcer, site unspecified. This is a non-billable header code in the Digestive System chapter (block K27). The 2026 edition of ICD-10-CM K27 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with K27. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- peptic ulcer of newborn (P78.82)
Includes
- gastroduodenal ulcer NOS
- peptic ulcer NOS
Use Additional Code
When coding K27, also report these additional codes when applicable.
- code to identify:
- alcohol abuse and dependence (F10.-)
Medicare LCD Coverage for K27
Local Coverage Determinations (LCDs) from CMS MACs that list K27 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing K27.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but K27 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with K27
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To K27
Other codes in section K20-K31 (Diseases of esophagus, stomach and duodenum).
ICD-10 K27, Billing FAQ
Is ICD-10 code K27 billable? +
No, K27 is a non-billable header code. Use a more specific child code from block K27 when submitting claims.
What codes are Type 1 Excludes for K27? +
Type 1 Excludes (never code together with K27): peptic ulcer of newborn (P78.82)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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