S84.10XS (Injury of peroneal nerve at lower leg level, unspecified leg, sequela) compared with S84.12XS (Injury of peroneal nerve at lower leg level, left leg, sequela), from the official CMS tabular data. S84.10XS and S84.12XS 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. S84.10XS and S84.12XS 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.
| S84.10XSInjury of peroneal nerve at lower leg level, unspecified leg, sequela | S84.12XSInjury of peroneal nerve at lower leg level, left leg, sequela | |
|---|---|---|
| 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 | Injury of peroneal nerve at lower leg level, unspecified leg, sequela is a billable ICD-10-CM diagnosis code (S84.10S). | Injury of peroneal nerve at lower leg level, left leg, sequela is a billable ICD-10-CM diagnosis code (S84.12S). |
| 7th character | The appropriate 7th character is to be added to each code from category S84 | The appropriate 7th character is to be added to each code from category S84 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources