Is C00 a billable code?
No. C00 is a header code that groups 9 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
C00: Malignant neoplasm of lip
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
C00 groups related diagnoses under malignant neoplasm of lip. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under C00
- C00.0Malignant neoplasm of external upper lip
- C00.1Malignant neoplasm of external lower lip
- C00.2Malignant neoplasm of external lip, unspecified
- C00.3Malignant neoplasm of upper lip, inner aspect
- C00.4Malignant neoplasm of lower lip, inner aspect
- C00.5Malignant neoplasm of lip, unspecified, inner aspect
- C00.6Malignant neoplasm of commissure of lip, unspecified
- C00.8Malignant neoplasm of overlapping sites of lip
- C00.9Malignant neoplasm of lip, unspecified
C00 questions
What does C00 mean?
C00 is the ICD-10-CM code for Malignant neoplasm of lip. It is in chapter 2, Neoplasms (C00-D49).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.