C00

Non-billable

Malignant neoplasm of lip

C00 is the ICD-10-CM code for Malignant neoplasm of lip. It is a non-billable category code — use a more specific child code such as C00.0 for billing.

Status
Header (non-billable)
Chapter
C00-D49
Subcodes
9
Edition
FY2026

C00-D49 Neoplasms

Excludes1 — not coded here

  • 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

  • code to identify:
  • alcohol abuse and dependence (F10.-)
  • history of tobacco dependence (Z87.891)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Frequently asked questions

What is ICD-10 code C00?
C00 is the ICD-10-CM code for "Malignant neoplasm of lip". It falls under C00-D49 Neoplasms.
Is C00 a billable code?
No — C00 is a non-billable header code. Use a more specific child code (such as C00.0) for billing.
What are the subcodes of C00?
C00 has 9 more specific child codes, including C00.0, C00.1, C00.2.
What is excluded from C00?
Excludes1 (not coded here): malignant melanoma of lip (C43.0); Merkel cell carcinoma of lip (C4A.0); other and unspecified malignant neoplasm of skin of lip (C44.0-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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