Chapter 2

C00–D49: Neoplasms

Neoplasms diagnostic classification updated for 2026.

All CodesBillable Only
Browse by Section23 Sections
Internal Codes
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  • C00—

    Malignant neoplasm of lip

  • 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

  • C01—

    Malignant neoplasm of base of tongue

  • C02—

    Malignant neoplasm of other and unspecified parts of tongue

  • C02.0—

    Malignant neoplasm of dorsal surface of tongue

  • C02.1—

    Malignant neoplasm of border of tongue

  • C02.2—

    Malignant neoplasm of ventral surface of tongue

  • C02.3—

    Malignant neoplasm of anterior two-thirds of tongue, part unspecified

  • C02.4—

    Malignant neoplasm of lingual tonsil

  • C02.8—

    Malignant neoplasm of overlapping sites of tongue

  • C02.9—

    Malignant neoplasm of tongue, unspecified

  • C03—

    Malignant neoplasm of gum

  • C03.0—

    Malignant neoplasm of upper gum

  • C03.1—

    Malignant neoplasm of lower gum

  • C03.9—

    Malignant neoplasm of gum, unspecified

  • C04—

    Malignant neoplasm of floor of mouth

  • C04.0—

    Malignant neoplasm of anterior floor of mouth

  • C04.1—

    Malignant neoplasm of lateral floor of mouth

  • C04.8—

    Malignant neoplasm of overlapping sites of floor of mouth

  • C04.9—

    Malignant neoplasm of floor of mouth, unspecified

  • C05—

    Malignant neoplasm of palate

  • C05.0—

    Malignant neoplasm of hard palate

  • C05.1—

    Malignant neoplasm of soft palate

  • C05.2—

    Malignant neoplasm of uvula

  • C05.8—

    Malignant neoplasm of overlapping sites of palate

  • C05.9—

    Malignant neoplasm of palate, unspecified

  • C06—

    Malignant neoplasm of other and unspecified parts of mouth

  • C06.0—

    Malignant neoplasm of cheek mucosa

  • C06.1—

    Malignant neoplasm of vestibule of mouth

  • C06.2—

    Malignant neoplasm of retromolar area

  • C06.8—

    Malignant neoplasm of overlapping sites of other and unspecified parts of mouth

  • C06.80—

    Malignant neoplasm of overlapping sites of unspecified parts of mouth

  • C06.89—

    Malignant neoplasm of overlapping sites of other parts of mouth

  • C06.9—

    Malignant neoplasm of mouth, unspecified

  • C07—

    Malignant neoplasm of parotid gland

  • C08—

    Malignant neoplasm of other and unspecified major salivary glands

  • C08.0—

    Malignant neoplasm of submandibular gland

  • C08.1—

    Malignant neoplasm of sublingual gland

  • C08.9—

    Malignant neoplasm of major salivary gland, unspecified

  • C09—

    Malignant neoplasm of tonsil

  • C09.0—

    Malignant neoplasm of tonsillar fossa

  • C09.1—

    Malignant neoplasm of tonsillar pillar (anterior) (posterior)

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