C00 is the authoritative medical code for Malignant neoplasm of lip. This classification is used in medical billing and clinical recording to specify the clinical criteria for malignant neoplasm of lip (ICD-10-CM C00), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Malignant neoplasm of lip is a non-billable ICD-10-CM category code C00. A more specific billable subcode must be selected for claims submission. 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.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C00 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- 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
Supplementary codes the tabular list directs you to add.
- code to identify:
- alcohol abuse and dependence F10.-
- history of tobacco dependence Z87.891
- tobacco dependence F17.-
- tobacco use Z72.0
Frequently Asked Questions (FAQ) & Clinical Guidance
Can C00 be billed directly?
No. C00 (Malignant neoplasm of lip) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with C00?
Per Excludes1 instructions, C00 must not be reported with: malignant melanoma of lip (C43.0); Merkel cell carcinoma of lip (C4A.0); other and unspecified malignant neoplasm of skin of lip (C44.0-).
Is an additional code needed with C00?
Use additional code(s) to specify: code to identify:; alcohol abuse and dependence (F10.-); history of tobacco dependence (Z87.891); tobacco dependence (F17.-).
Codes in This Family (9)
Official ICD-10-CM classifications in the same code family as C00, with their registry titles.
- C00.0 — Malignant neoplasm of external upper lip
- C00.1 — Malignant neoplasm of external lower lip
- C00.2 — Malignant neoplasm of external lip, unspecified
- C00.3 — Malignant neoplasm of upper lip, inner aspect
- C00.4 — Malignant neoplasm of lower lip, inner aspect
- C00.5 — Malignant neoplasm of lip, unspecified, inner aspect
- C00.6 — Malignant neoplasm of commissure of lip, unspecified
- C00.8 — Malignant neoplasm of overlapping sites of lip
- C00.9 — Malignant neoplasm of lip, unspecified
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code C02
Malignant neoplasm of other and unspecified parts of tongue