ICD-10 C26
Non-Billable HeaderMalignant neoplasm of other and ill-defined digestive organs
About ICD-10-CM C26
ICD-10-CM code C26 represents Malignant neoplasm of other and ill-defined digestive organs. This is a non-billable header code in the Neoplasms chapter (block C26). The 2026 edition of ICD-10-CM C26 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 C26. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- malignant neoplasm of peritoneum and retroperitoneum (C48.-)
Medicare LCD Coverage for C26
Local Coverage Determinations (LCDs) from CMS MACs that list C26 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 C26.
4 Humana Medicaid
1 Humana Medicare Advantage
CPT Codes Commonly Billed with C26
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 C26
Other codes in section C15-C26 (Malignant neoplasms of digestive organs).
ICD-10 C26, Billing FAQ
Is ICD-10 code C26 billable? +
No, C26 is a non-billable header code. Use a more specific child code from block C26 when submitting claims.
What codes are Type 1 Excludes for C26? +
Type 1 Excludes (never code together with C26): malignant neoplasm of peritoneum and retroperitoneum (C48.-)
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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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