C44.1Other and unspecified malignant neoplasm of skin of eyelid, including canthus

C44.1 is the ICD-10-CM diagnosis code for other and unspecified malignant neoplasm of skin of eyelid, including canthus. It belongs to category C44 (other and unspecified malignant neoplasm of skin), block C43-C44 (melanoma and other malignant neoplasms of skin) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within C44 (other and unspecified malignant neoplasm of skin), C44.1 is specifically for other and unspecified malignant neoplasm of skin of eyelid, including canthus. Related codes cover of lip (C44.0), of ear and external auricular canal (C44.2), of other and unspecified parts of face (C44.3), of scalp and neck (C44.4), of trunk (C44.5), of upper limb, including shoulder (C44.6), of lower limb, including hip (C44.7), overlapping sites of skin (C44.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: C44.10 (canthus), C44.11 (canthus), C44.12 (canthus), C44.13 (canthus) and C44.19 (canthus).

Don't report C44.1 together with the conditions in its Excludes1 note: connective tissue of eyelid (C49.0).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.