C00-C14Not billable, use a more specific code below
Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
chapter 2: Neoplasms
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Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Rules for coding benign and malignant neoplasms: using the Neoplasm Table, sequencing primary and secondary sites, treatment encounters, complications, and current cancer versus personal history.
- Admission/Encounter for treatment of primary site (page 33)
- Admission/Encounter for treatment of secondary site (page 33)
- Coding and sequencing of complications (page 34)
- Primary malignancy previously excised (page 34)
- Admissions/Encounters involving antineoplastic chemotherapy, immunotherapy and radiation therapy (page 35)
- Admission/encounter to determine extent of malignancy (page 36)
- Symptoms, signs, and abnormal findings listed in Chapter 18 associated with neoplasms (page 36)
- Admission/encounter for pain control/management (page 36)
All codes under C00-C14
C00-C14 can't be used on a claim. Pick a billable code below; grey headings group them.
- C00Malignant neoplasm of lip
- C00.0Malignant neoplasm of external upper lip
- C00.1Malignant neoplasm of external lower lip
- C00.2Malignant neoplasm of external lip, unspecified
- C00.3Malignant neoplasm of upper lip, inner aspect
- C00.4Malignant neoplasm of lower lip, inner aspect
- C00.5Malignant neoplasm of lip, unspecified, inner aspect
- C00.6Malignant neoplasm of commissure of lip, unspecified
- C00.8Malignant neoplasm of overlapping sites of lip
- C00.9Malignant neoplasm of lip, unspecified
- C01Malignant neoplasm of base of tongue
- C02Malignant neoplasm of other and unspecified parts of tongue
- C02.0Malignant neoplasm of dorsal surface of tongue
- C02.1Malignant neoplasm of border of tongue
- C02.2Malignant neoplasm of ventral surface of tongue
- C02.3Malignant neoplasm of anterior two-thirds of tongue, part unspecified
- C02.4Malignant neoplasm of lingual tonsil
- C02.8Malignant neoplasm of overlapping sites of tongue
- C02.9Malignant neoplasm of tongue, unspecified
- C03Malignant neoplasm of gum
- C03.0Malignant neoplasm of upper gum
- C03.1Malignant neoplasm of lower gum
- C03.9Malignant neoplasm of gum, unspecified
- C04Malignant neoplasm of floor of mouth
- C04.0Malignant neoplasm of anterior floor of mouth
- C04.1Malignant neoplasm of lateral floor of mouth
- C04.8Malignant neoplasm of overlapping sites of floor of mouth
- C04.9Malignant neoplasm of floor of mouth, unspecified
- C05Malignant neoplasm of palate
- C05.0Malignant neoplasm of hard palate
- C05.1Malignant neoplasm of soft palate
- C05.2Malignant neoplasm of uvula
- C05.8Malignant neoplasm of overlapping sites of palate
- C05.9Malignant neoplasm of palate, unspecified
- C06Malignant neoplasm of other and unspecified parts of mouth
- C06.0Malignant neoplasm of cheek mucosa
- C06.1Malignant neoplasm of vestibule of mouth
- C06.2Malignant neoplasm of retromolar area
- C06.8Malignant neoplasm of overlapping sites of other and unspecified parts of mouth
- C06.80Malignant neoplasm of overlapping sites of unspecified parts of mouth
- C06.89Malignant neoplasm of overlapping sites of other parts of mouth
- C06.9Malignant neoplasm of mouth, unspecified
- C07Malignant neoplasm of parotid gland
- C08Malignant neoplasm of other and unspecified major salivary glands
- C08.0Malignant neoplasm of submandibular gland
- C08.1Malignant neoplasm of sublingual gland
- C08.9Malignant neoplasm of major salivary gland, unspecified
- C09Malignant neoplasm of tonsil
- C09.0Malignant neoplasm of tonsillar fossa
- C09.1Malignant neoplasm of tonsillar pillar (anterior) (posterior)
- C09.8Malignant neoplasm of overlapping sites of tonsil
- C09.9Malignant neoplasm of tonsil, unspecified
- C10Malignant neoplasm of oropharynx
- C10.0Malignant neoplasm of vallecula
- C10.1Malignant neoplasm of anterior surface of epiglottis
- C10.2Malignant neoplasm of lateral wall of oropharynx
- C10.3Malignant neoplasm of posterior wall of oropharynx
- C10.4Malignant neoplasm of branchial cleft
- C10.8Malignant neoplasm of overlapping sites of oropharynx
- C10.9Malignant neoplasm of oropharynx, unspecified
- C11Malignant neoplasm of nasopharynx
- C11.0Malignant neoplasm of superior wall of nasopharynx
- C11.1Malignant neoplasm of posterior wall of nasopharynx
- C11.2Malignant neoplasm of lateral wall of nasopharynx
- C11.3Malignant neoplasm of anterior wall of nasopharynx
- C11.8Malignant neoplasm of overlapping sites of nasopharynx
- C11.9Malignant neoplasm of nasopharynx, unspecified
- C12Malignant neoplasm of pyriform sinus
- C13Malignant neoplasm of hypopharynx
- C13.0Malignant neoplasm of postcricoid region
- C13.1Malignant neoplasm of aryepiglottic fold, hypopharyngeal aspect
- C13.2Malignant neoplasm of posterior wall of hypopharynx
- C13.8Malignant neoplasm of overlapping sites of hypopharynx
- C13.9Malignant neoplasm of hypopharynx, unspecified
- C14Malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx
- C14.0Malignant neoplasm of pharynx, unspecified
- C14.2Malignant neoplasm of Waldeyer's ring
- C14.8Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx
C00-C14 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
Other codes that refer to C00-C14
Notes on these codes point to C00-C14.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Oral Cancer
Oral cancer is cancer of the mouth. It is a type of head and neck cancer. Most oral cancers are squamous cell cancers. They begin in the flat cells that cover the surfaces of your mouth, tongue, and lips. The cancer cells may spread into deeper tissue as the cancer grows.
Read more about oral cancer on MedlinePlus