Distinction between upper and lower eyelids of right and left eyes has been added to a number of malignant and benign neoplasm ICD-10 codes, according to the American Society of Ophthalmic Administrators, which released a list of fiscal year 2019 code changes that affect ophthalmology.
These additions, which include the canthus, affect the following codes:
C43, malignant melanoma of skin;
C44, other and unspecified malignant neoplasm of skin;
C4A, Merkel cell carcinoma;
D03, melanoma in situ;
D04, carcinoma in situ of skin;
D22, melanocytic nevi; and
D23, other benign neoplasms of skin.
Codes
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