ICD-10-CM > S00-T88 > S40-S49 > S41 > S41.1 > S41.10 S41.10 Unspecified open wound of upper arm Non-Billable/Non-Specific Codes S41.101Unspecified open wound of right upper armS41.101A..., initial encounterS41.101D..., subsequent encounterS41.101S..., sequelaS41.102Unspecified open wound of left upper armS41.102A..., initial encounterS41.102D..., subsequent encounterS41.102S..., sequelaS41.109Unspecified open wound of unspecified upper armS41.109A..., initial encounterS41.109D..., subsequent encounterS41.109S..., sequela