Z44.21 (Encounter for fitting and adjustment of artificial right eye) compared with Z44.22 (Encounter for fitting and adjustment of artificial left eye), from the official CMS tabular data. Z44.21 and Z44.22 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. Z44.21 and Z44.22 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.
| Z44.21Encounter for fitting and adjustment of artificial right eye | Z44.22Encounter for fitting and adjustment of artificial left eye | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Encounter for fitting and adjustment of artificial right eye is a billable ICD-10-CM diagnosis code (Z44.21). | Encounter for fitting and adjustment of artificial left eye is a billable ICD-10-CM diagnosis code (Z44.22). |
| Includes | removal or replacement of external prosthetic device | removal or replacement of external prosthetic device |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources