C69.40 (Malignant neoplasm of unspecified ciliary body) compared with C69.42 (Malignant neoplasm of left ciliary body), from the official CMS tabular data. C69.40 and C69.42 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. C69.40 and C69.42 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.
| C69.40Malignant neoplasm of unspecified ciliary body | C69.42Malignant neoplasm of left ciliary body | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Malignant neoplasm of unspecified ciliary body is a billable ICD-10-CM diagnosis code (C69.40). | Malignant neoplasm of left ciliary body is a billable ICD-10-CM diagnosis code (C69.42). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources