H18.791 (Other corneal deformities, right eye) compared with H18.799 (Other corneal deformities, unspecified eye), from the official CMS tabular data. H18.791 and H18.799 code the same condition on opposite sides. MedCoder-derived
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. H18.791 and H18.799 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.
| H18.791Other corneal deformities, right eye | H18.799Other corneal deformities, unspecified eye | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | H00-H59 — Diseases of the eye and adnexa | H00-H59 — Diseases of the eye and adnexa |
| Definition | Other corneal deformities, right eye is a billable ICD-10-CM diagnosis code (H18.791). | Other corneal deformities, unspecified eye is a billable ICD-10-CM diagnosis code (H18.799). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources