ICD-10-CM > S00-T88 > S60-S69 > S64 > S64.0 S64.0 Injury of ulnar nerve at wrist and hand level Non-Billable/Non-Specific Codes S64.00Injury of ulnar nerve at wrist and hand level of unspecified armS64.00XA..., initial encounterS64.00XD..., subsequent encounterS64.00XS..., sequelaS64.01Injury of ulnar nerve at wrist and hand level of right armS64.01XA..., initial encounterS64.01XD..., subsequent encounterS64.01XS..., sequelaS64.02Injury of ulnar nerve at wrist and hand level of left armS64.02XA..., initial encounterS64.02XD..., subsequent encounterS64.02XS..., sequela