Non-Billable / Non-Specific Code
ICD-10-CM C00 is the diagnosis code for Malignant neoplasm of lip. This code falls under the section "Malignant neoplasms of lip, oral cavity and pharynx" within Chapter 2 — Neoplasms (C00-D49). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as C00. They are mutually exclusive:
Understanding where C00 sits in the ICD-10-CM classification helps ensure proper coding:
No, C00 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
C00 is the ICD-10-CM diagnosis code for "Malignant neoplasm of lip". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
C00 is located in Section C00-C14 — "Malignant neoplasms of lip, oral cavity and pharynx" within Chapter 2 of the ICD-10-CM Tabular List.
C00 has 9 sub-code(s) that provide more specific detail: C00.0, C00.1, C00.2, C00.3, C00.4 and more.
Use C00 when the patients documented diagnosis matches "Malignant neoplasm of lip" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Malignant neoplasm of lip is C00.
No, C00 is non-billable. Use a more specific sub-code for primary diagnosis billing.
C00 is in Chapter 2 of the ICD-10-CM Tabular List.
Type 1 Excludes for C00 include: malignant melanoma of lip (C43.0); Merkel cell carcinoma of lip (C4A.0); other and unspecified malignant neoplasm of skin of lip (C44.0-).
Yes, C00 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.