ICD-10-CM > S00-T88 > T79-T79 > T79 > T79.A > T79.A2 > T79.A21 T79.A21 Traumatic compartment syndrome of right lower extremity Non-Billable/Non-Specific Codes T79.A21A..., initial encounterT79.A21D..., subsequent encounterT79.A21S..., sequela