ICD-10-CM > S00-T88 > T79-T79 > T79 > T79.A > T79.A1 > T79.A12 T79.A12 Traumatic compartment syndrome of left upper extremity Non-Billable/Non-Specific Codes T79.A12A..., initial encounterT79.A12D..., subsequent encounterT79.A12S..., sequela