T26.50XA (Corrosion of unspecified eyelid and periocular area, initial encounter) compared with T26.52XA (Corrosion of left eyelid and periocular area, initial encounter), from the official CMS tabular data. T26.50XA and T26.52XA 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. T26.50XA and T26.52XA 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.
| T26.50XACorrosion of unspecified eyelid and periocular area, initial encounter | T26.52XACorrosion of left eyelid and periocular area, initial encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, poisoning and certain other consequences of external causes | S00-T88 — Injury, poisoning and certain other consequences of external causes |
| Definition | Corrosion of unspecified eyelid and periocular area, initial encounter is a billable ICD-10-CM diagnosis code (T26.50A). | Corrosion of left eyelid and periocular area, initial encounter is a billable ICD-10-CM diagnosis code (T26.52A). |
| 7th character | The appropriate 7th character is to be added to each code from category T26 | The appropriate 7th character is to be added to each code from category T26 |
| Use additional code | external cause code to identify place (Y92) | external cause code to identify place (Y92) |
| Code first | (T51-T65) to identify chemical and intent | (T51-T65) to identify chemical and intent |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources