C44.191 (Other specified malignant neoplasm of skin of unspecified eyelid, including canthus) compared with C44.199 (Other specified malignant neoplasm of skin of left eyelid, including canthus), from the official CMS tabular data. C44.191 and C44.199 code the same condition on opposite sides.
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. C44.191 and C44.199 name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| C44.191Other specified malignant neoplasm of skin of unspecified eyelid, including canthus | C44.199Other specified malignant neoplasm of skin of left eyelid, including canthus | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Other specified malignant neoplasm of skin of unspecified eyelid, including canthus is a billable ICD-10-CM diagnosis code (C44.191). | Other specified malignant neoplasm of skin of left eyelid, including canthus is a non-billable ICD-10-CM category code (C44.199). |
| Includes | malignant neoplasm of sebaceous glands malignant neoplasm of sweat glands | malignant neoplasm of sebaceous glands malignant neoplasm of sweat glands |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources