ICD-10-CM > S00-T88 > T66-T78 > T71 > T71.1 > T71.14 > T71.144 T71.144 Asphyxiation due to smothering under another person's body (in bed), undetermined Non-Billable/Non-Specific Codes T71.144A..., initial encounterT71.144D..., subsequent encounterT71.144S..., sequela