C00.9

Malignant neoplasm of lip, unspecified

Billable / specific

C00.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Includes (from C00)

  • Note: Functional activity
  • Note: All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Note: Morphology [Histology]
  • Note: Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Note: Primary malignant neoplasms overlapping site boundaries
  • Note: A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Note: Malignant neoplasm of ectopic tissue
  • Note: Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

Excludes1

Not coded here — never report together with this code.

  • malignant melanoma of lip (C43.0) (from C00)
  • Merkel cell carcinoma of lip (C4A.0) (from C00)
  • other and unspecified malignant neoplasm of skin of lip (C44.0-) (from C00)

Use additional code

Add a code to identify the following, if applicable.

  • code to identify: (from C00)
  • alcohol abuse and dependence (F10.-) (from C00)
  • history of tobacco dependence (Z87.891) (from C00)
  • tobacco dependence (F17.-) (from C00)
  • tobacco use (Z72.0) (from C00)

Parent code

  • C00Malignant neoplasm of lipHeader

Related codes

  • C00.0Malignant neoplasm of external upper lipBillable
  • C00.1Malignant neoplasm of external lower lipBillable
  • C00.2Malignant neoplasm of external lip, unspecifiedBillable
  • C00.3Malignant neoplasm of upper lip, inner aspectBillable
  • C00.4Malignant neoplasm of lower lip, inner aspectBillable
  • C00.5Malignant neoplasm of lip, unspecified, inner aspectBillable
  • C00.6Malignant neoplasm of commissure of lip, unspecifiedBillable
  • C00.8Malignant neoplasm of overlapping sites of lipBillable

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