ICD-10-CM category
C00 Malignant neoplasm of lip
C00 is a category, not a billable code. Report one of the 9 complete codes below.
Codes in 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
Outside the US? C00 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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