Code
Hierarchy
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C00-D49 Neoplasms (C00-D49)
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C00-C96 Malignant neoplasms (C00-C96)
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C00-C75 Malignant neoplasms, stated or presumed to be primary (of specified sites), and certain specified histologies, except neuroendocrine, and of lymphoid, hematopoietic and related tissue (C00-C75)
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C43-C44 Melanoma and other malignant neoplasms of skin (C43-C44)
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C43 Malignant melanoma of skin
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C43.0 Malignant melanoma of lip
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C43.1 Malignant melanoma of eyelid, including canthus
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C43.2 Malignant melanoma of ear and external auricular canal
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C43.3 Malignant melanoma of other and unspecified parts of face
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C43.4 Malignant melanoma of scalp and neck
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C43.5 Malignant melanoma of trunk
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C43.6 Malignant melanoma of upper limb, including shoulder
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C43.7 Malignant melanoma of lower limb, including hip
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C43.8 Malignant melanoma of overlapping sites of skin
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C43.9 Malignant melanoma of skin, unspecified
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Notes
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Functional activity
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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.
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Morphology [Histology]
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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.
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Primary malignant neoplasms overlapping site boundaries
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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.
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Malignant neoplasm of ectopic tissue
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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).
- C25.9 Malignant neoplasm of pancreas, unspecified