ICD-10 C00
Non-Billable HeaderMalignant neoplasm of lip
About ICD-10-CM C00
ICD-10-CM code C00 represents Malignant neoplasm of lip. This is a non-billable header code in the Neoplasms chapter (block C00). The 2026 edition of ICD-10-CM C00 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 C00. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- malignant melanoma of lip (C43.0)
- Merkel cell carcinoma of lip (C4A.0)
- other and unspecified malignant neoplasm of skin of lip (C44.0-)
Use Additional Code
When coding C00, also report these additional codes when applicable.
- code to identify:
- alcohol abuse and dependence (F10.-)
- history of tobacco dependence (Z87.891)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Medicare LCD Coverage for C00
Local Coverage Determinations (LCDs) from CMS MACs that list C00 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 C00.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but C00 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with C00
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 C00
Other codes in section C00-C14 (Malignant neoplasms of lip, oral cavity and pharynx).
ICD-10 C00, Billing FAQ
Is ICD-10 code C00 billable? +
No, C00 is a non-billable header code. Use a more specific child code from block C00 when submitting claims.
What codes are Type 1 Excludes for C00? +
Type 1 Excludes (never code together with C00): malignant melanoma of lip (C43.0); Merkel cell carcinoma of lip (C4A.0); other and unspecified malignant neoplasm of skin of lip (C44.0-)
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