ICD-10-CM Section C43-C44
Melanoma and other malignant neoplasms of skin
- C43 Malignant melanoma of skin NON-BILLABLE
- C44 Other and unspecified malignant neoplasm of skin NON-BILLABLE
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- C44.10 Unspecified malignant neoplasm of skin of eyelid, including canthus NON-BILLABLE
- C44.11 Basal cell carcinoma of skin of eyelid, including canthus NON-BILLABLE
- C44.12 Squamous cell carcinoma of skin of eyelid, including canthus NON-BILLABLE
- C44.19 Other specified malignant neoplasm of skin of eyelid, including canthus NON-BILLABLE
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- C44.20 Unspecified malignant neoplasm of skin of ear and external auricular canal NON-BILLABLE
- C44.21 Basal cell carcinoma of skin of ear and external auricular canal NON-BILLABLE
- C44.22 Squamous cell carcinoma of skin of ear and external auricular canal NON-BILLABLE
- C44.29 Other specified malignant neoplasm of skin of ear and external auricular canal NON-BILLABLE
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- C44.30 Unspecified malignant neoplasm of skin of other and unspecified parts of face NON-BILLABLE
- C44.31 Basal cell carcinoma of skin of other and unspecified parts of face NON-BILLABLE
- C44.32 Squamous cell carcinoma of skin of other and unspecified parts of face NON-BILLABLE
- C44.39 Other specified malignant neoplasm of skin of other and unspecified parts of face NON-BILLABLE
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- C44.50 Unspecified malignant neoplasm of skin of trunk NON-BILLABLE
- C44.51 Basal cell carcinoma of skin of trunk NON-BILLABLE
- C44.52 Squamous cell carcinoma of skin of trunk NON-BILLABLE
- C44.59 Other specified malignant neoplasm of skin of trunk NON-BILLABLE
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- C44.60 Unspecified malignant neoplasm of skin of upper limb, including shoulder NON-BILLABLE
- C44.61 Basal cell carcinoma of skin of upper limb, including shoulder NON-BILLABLE
- C44.62 Squamous cell carcinoma of skin of upper limb, including shoulder NON-BILLABLE
- C44.69 Other specified malignant neoplasm of skin of upper limb, including shoulder NON-BILLABLE
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- C44.70 Unspecified malignant neoplasm of skin of lower limb, including hip NON-BILLABLE
- C44.71 Basal cell carcinoma of skin of lower limb, including hip NON-BILLABLE
- C44.72 Squamous cell carcinoma of skin of lower limb, including hip NON-BILLABLE
- C44.79 Other specified malignant neoplasm of skin of lower limb, including hip NON-BILLABLE
- C4A Merkel cell carcinoma NON-BILLABLE
Coding Notes for Section C43-C44
- Section Notes:
- Functional activity
- 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.
- Morphology [Histology]
- 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.
- Primary malignant neoplasms overlapping site boundaries
- 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.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified code C25.9.