T71.144 - Asphyxiation due to smothering under another person's body (in bed), undetermined T71.1 - Asphyxiation due to mechanical threat to breathing T71.14 - Asphyxiation due to smothering under another person's body (in bed) T71.144 - Asphyxiation due to smothering under another person's body (in bed), undetermined