S85.181A (Other specified injury of posterior tibial artery, right leg, initial encounter) compared with S85.182A (Other specified injury of posterior tibial artery, left leg, initial encounter), from the official CMS tabular data. S85.181A and S85.182A 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. S85.181A and S85.182A 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.
| S85.181AOther specified injury of posterior tibial artery, right leg, initial encounter | S85.182AOther specified injury of posterior tibial artery, left leg, initial encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Other specified injury of posterior tibial artery, right leg, initial encounter is a billable ICD-10-CM diagnosis code (S85.181A). | Other specified injury of posterior tibial artery, left leg, initial encounter is a billable ICD-10-CM diagnosis code (S85.182A). |
| 7th character | The appropriate 7th character is to be added to each code from category S85 | The appropriate 7th character is to be added to each code from category S85 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources