S94.21XA (Injury of deep peroneal nerve at ankle and foot level, right leg, initial encounter) compared with S94.22XA (Injury of deep peroneal nerve at ankle and foot level, left leg, initial encounter), from the official CMS tabular data. S94.21XA and S94.22XA 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. S94.21XA and S94.22XA 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.
| S94.21XAInjury of deep peroneal nerve at ankle and foot level, right leg, initial encounter | S94.22XAInjury of deep peroneal nerve at ankle and foot level, left leg, 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 | Injury of deep peroneal nerve at ankle and foot level, right leg, initial encounter is a billable ICD-10-CM diagnosis code (S94.21A). | Injury of deep peroneal nerve at ankle and foot level, left leg, initial encounter is a billable ICD-10-CM diagnosis code (S94.22A). |
| 7th character | The appropriate 7th character is to be added to each code from category S94 | The appropriate 7th character is to be added to each code from category S94 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources