S54.21XD (Injury of radial nerve at forearm level, right arm, subsequent encounter) compared with S54.22XD (Injury of radial nerve at forearm level, left arm, subsequent encounter), from the official CMS tabular data. S54.21XD and S54.22XD 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. S54.21XD and S54.22XD 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.
| S54.21XDInjury of radial nerve at forearm level, right arm, subsequent encounter | S54.22XDInjury of radial nerve at forearm level, left arm, subsequent 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 radial nerve at forearm level, right arm, subsequent encounter is a billable ICD-10-CM diagnosis code (S54.21D). | Injury of radial nerve at forearm level, left arm, subsequent encounter is a billable ICD-10-CM diagnosis code (S54.22D). |
| 7th character | The appropriate 7th character is to be added to each code from category S54 | The appropriate 7th character is to be added to each code from category S54 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources