ICD-10-CM > S00-T88 > S50-S59 > S54 > S54.3 S54.3 Injury of cutaneous sensory nerve at forearm level Non-Billable/Non-Specific Codes S54.30Injury of cutaneous sensory nerve at forearm level, unspecified armS54.30XA..., initial encounterS54.30XD..., subsequent encounterS54.30XS..., sequelaS54.31Injury of cutaneous sensory nerve at forearm level, right armS54.31XA..., initial encounterS54.31XD..., subsequent encounterS54.31XS..., sequelaS54.32Injury of cutaneous sensory nerve at forearm level, left armS54.32XA..., initial encounterS54.32XD..., subsequent encounterS54.32XS..., sequela