ICD-10-CM > S00-T88 > S50-S59 > S54 > S54.8 > S54.8X > S54.8X1 S54.8X1 Injury of other nerves at forearm level, right arm Non-Billable/Non-Specific Codes S54.8X1A..., initial encounterS54.8X1D..., subsequent encounterS54.8X1S..., sequela