C04
Header — not billableMalignant neoplasm of floor of mouth
The ICD-10 code for malignant neoplasm of floor of mouth is C04.
C04 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Clinical notes
Use additional code
This code represents an underlying condition. When a related manifestation is also present, coding convention calls for an additional code to be listed after this one.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- C00Malignant neoplasm of lipnon-billable header
- C01Malignant neoplasm of base of tongue
- C02Malignant neoplasm of other and unspecified parts of tonguenon-billable header
- C03Malignant neoplasm of gumnon-billable header
- C05Malignant neoplasm of palatenon-billable header
- C06Malignant neoplasm of other and unspecified parts of mouthnon-billable header
- C07Malignant neoplasm of parotid gland
- C08Malignant neoplasm of other and unspecified major salivary glandsnon-billable header
- C09Malignant neoplasm of tonsilnon-billable header
- C10Malignant neoplasm of oropharynxnon-billable header
- C11Malignant neoplasm of nasopharynxnon-billable header
- C12Malignant neoplasm of pyriform sinus
- C13Malignant neoplasm of hypopharynxnon-billable header
- C14Malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynxnon-billable header
- C04Malignant neoplasm of floor of mouthnon-billable header