S85.161 (Unspecified injury of posterior tibial artery, right leg) compared with S85.169 (Unspecified injury of posterior tibial artery, unspecified leg), from the official CMS tabular data. S85.161 and S85.169 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. S85.161 and S85.169 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.
| S85.161Unspecified injury of posterior tibial artery, right leg | S85.169Unspecified injury of posterior tibial artery, unspecified leg | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| 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 | Unspecified injury of posterior tibial artery, right leg is a non-billable ICD-10-CM category code (S85.161). | Unspecified injury of posterior tibial artery, unspecified leg is a non-billable ICD-10-CM category code (S85.169). |
| 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