H18.821 (Corneal disorder due to contact lens, right eye) compared with H18.822 (Corneal disorder due to contact lens, left eye), from the official CMS tabular data. H18.821 and H18.822 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. H18.821 and H18.822 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.
| H18.821Corneal disorder due to contact lens, right eye | H18.822Corneal disorder due to contact lens, left eye | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) |
| Definition | Corneal disorder due to contact lens, right eye is a billable ICD-10-CM diagnosis code (H18.821). | Corneal disorder due to contact lens, left eye is a billable ICD-10-CM diagnosis code (H18.822). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources