S64.00XA (Injury of ulnar nerve at wrist and hand level of unspecified arm, initial encounter) compared with S64.01XA (Injury of ulnar nerve at wrist and hand level of right arm, initial encounter), from the official CMS tabular data. S64.00XA and S64.01XA 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. S64.00XA and S64.01XA 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.
| S64.00XAInjury of ulnar nerve at wrist and hand level of unspecified arm, initial encounter | S64.01XAInjury of ulnar nerve at wrist and hand level of right arm, 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 ulnar nerve at wrist and hand level of unspecified arm, initial encounter is a billable ICD-10-CM diagnosis code (S64.00A). | Injury of ulnar nerve at wrist and hand level of right arm, initial encounter is a billable ICD-10-CM diagnosis code (S64.01A). |
| 7th character | The appropriate 7th character is to be added to each code from category S64 | The appropriate 7th character is to be added to each code from category S64 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources