D23.1 vs D31
D23.1 (Other benign neoplasm of skin of eyelid, including canthus) compared with D31 (Benign neoplasm of eye and adnexa), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. D31 carries an Excludes1 note covering D23.1: “benign neoplasm of skin of eyelid (D22.1-, D23.1-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| D23.1Other benign neoplasm of skin of eyelid, including canthus | D31Benign neoplasm of eye and adnexa | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Other benign neoplasm of skin of eyelid, including canthus is a non-billable ICD-10-CM category code (D23.1). | Benign neoplasm of eye and adnexa is a non-billable ICD-10-CM category code (D31). |
| Includes | benign neoplasm of hair follicles benign neoplasm of sebaceous glands benign 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