ICD-10-CM > S00-T88 > S40-S49 > S44 > S44.5 > S44.50 S44.50 Injury of cutaneous sensory nerve at shoulder and upper arm level, unspecified arm Non-Billable/Non-Specific Codes S44.50XA..., initial encounterS44.50XD..., subsequent encounterS44.50XS..., sequela