ICD-10-CM > S00-T88 > T66-T78 > T71 > T71.2 > T71.22 > T71.221 T71.221 Asphyxiation due to being trapped in a car trunk, accidental Non-Billable/Non-Specific Codes T71.221A..., initial encounterT71.221D..., subsequent encounterT71.221S..., sequela