S85.131A (Unspecified injury of anterior tibial artery, right leg, initial encounter) compared with S85.139A (Unspecified injury of anterior tibial artery, unspecified leg, initial encounter), from the official CMS tabular data. S85.131A and S85.139A 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. S85.131A and S85.139A 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.
| S85.131AUnspecified injury of anterior tibial artery, right leg, initial encounter | S85.139AUnspecified injury of anterior tibial artery, unspecified 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 | Unspecified injury of anterior tibial artery, right leg, initial encounter is a billable ICD-10-CM diagnosis code (S85.131A). | Unspecified injury of anterior tibial artery, unspecified leg, initial encounter is a billable ICD-10-CM diagnosis code (S85.139A). |
| 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