ICD-10-CM > S00-T88 > T66-T78 > T71 > T71.2 T71.2 Asphyxiation due to systemic oxygen deficiency due to low oxygen content in ambient air Non-Billable/Non-Specific Applicable To Suffocation due to systemic oxygen deficiency due to low oxygen content in ambient air Codes T71.20Asphyxiation due to systemic oxygen deficiency due to low oxygen content in ambient air due to unspecified causeT71.20XA..., initial encounterT71.20XD..., subsequent encounterT71.20XS..., sequelaT71.21Asphyxiation due to cave-in or falling earthT71.21XA..., initial encounterT71.21XD..., subsequent encounterT71.21XS..., sequelaT71.22Asphyxiation due to being trapped in a car trunkT71.221Asphyxiation due to being trapped in a car trunk, accidentalT71.221A..., initial encounterT71.221D..., subsequent encounterT71.221S..., sequelaT71.222Asphyxiation due to being trapped in a car trunk, intentional self-harmT71.222A..., initial encounterT71.222D..., subsequent encounterT71.222S..., sequelaT71.223Asphyxiation due to being trapped in a car trunk, assaultT71.223A..., initial encounterT71.223D..., subsequent encounterT71.223S..., sequelaT71.224Asphyxiation due to being trapped in a car trunk, undeterminedT71.224A..., initial encounterT71.224D..., subsequent encounterT71.224S..., sequelaT71.23Asphyxiation due to being trapped in a (discarded) refrigeratorT71.231Asphyxiation due to being trapped in a (discarded) refrigerator, accidentalT71.231A..., initial encounterT71.231D..., subsequent encounterT71.231S..., sequelaT71.232Asphyxiation due to being trapped in a (discarded) refrigerator, intentional self-harmT71.232A..., initial encounterT71.232D..., subsequent encounterT71.232S..., sequelaT71.233Asphyxiation due to being trapped in a (discarded) refrigerator, assaultT71.233A..., initial encounterT71.233D..., subsequent encounterT71.233S..., sequelaT71.234Asphyxiation due to being trapped in a (discarded) refrigerator, undeterminedT71.234A..., initial encounterT71.234D..., subsequent encounterT71.234S..., sequelaT71.29Asphyxiation due to being trapped in other low oxygen environmentT71.29XA..., initial encounterT71.29XD..., subsequent encounterT71.29XS..., sequela