ICD-10 C17
Non-Billable HeaderMalignant neoplasm of small intestine
About ICD-10-CM C17
ICD-10-CM code C17 represents Malignant neoplasm of small intestine. This is a non-billable header code in the Neoplasms chapter (block C17). The 2026 edition of ICD-10-CM C17 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 C17. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- malignant carcinoid tumors of the small intestine (C7A.01)
Medicare LCD Coverage for C17
Local Coverage Determinations (LCDs) from CMS MACs that list C17 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 C17.
2 Humana
CPT Codes Commonly Billed with C17
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 C17
Other codes in section C15-C26 (Malignant neoplasms of digestive organs).
ICD-10 C17, Billing FAQ
Is ICD-10 code C17 billable? +
No, C17 is a non-billable header code. Use a more specific child code from block C17 when submitting claims.
What codes are Type 1 Excludes for C17? +
Type 1 Excludes (never code together with C17): malignant carcinoid tumors of the small intestine (C7A.01)
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team