C00 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Malignant neoplasm of lip.
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Malignant neoplasm of external upper lip
Malignant neoplasm of external lower lip
Malignant neoplasm of external lip, unspecified
Malignant neoplasm of upper lip, inner aspect
Malignant neoplasm of lower lip, inner aspect
Malignant neoplasm of lip, unspecified, inner aspect
Malignant neoplasm of commissure of lip, unspecified
Malignant neoplasm of overlapping sites of lip
Malignant neoplasm of lip, unspecified
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