Alphabetic Index FY2027

D22

Melanocytic nevi

FY2027Chapter 2: Neoplasms/D10–D36 Benign neoplasms, except benign neuroendocrine tumors

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

    D22 is a non-billable ICD-10-CM code category for melanocytic nevi. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are D22.0 Melanocytic nevi of lip; D22.1 Melanocytic nevi of eyelid, including canthus; D22.2 Melanocytic nevi of ear and external auricular canal; D22.3 Melanocytic nevi of other and unspecified parts of face and 5 more.

    Includes

    Further defines or gives examples of the content of the category.

    This code
    • atypical nevus
    • blue hairy pigmented nevus
    • nevus NOS

    Notes

    Also from chapter/block level (8 notes)
    Inherited from Chapter 2 Neoplasms
    • 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 (C25.9).

    More specific codes under D22 9