ICD-10-CM > S00-T88 > T36-T50 > T48 > T48.9 > T48.99 T48.99 Poisoning by, adverse effect of and underdosing of other agents primarily acting on the respiratory system Non-Billable/Non-Specific Codes T48.991Poisoning by other agents primarily acting on the respiratory system, accidental (unintentional)T48.991A..., initial encounterT48.991D..., subsequent encounterT48.991S..., sequelaT48.992Poisoning by other agents primarily acting on the respiratory system, intentional self-harmT48.992A..., initial encounterT48.992D..., subsequent encounterT48.992S..., sequelaT48.993Poisoning by other agents primarily acting on the respiratory system, assaultT48.993A..., initial encounterT48.993D..., subsequent encounterT48.993S..., sequelaT48.994Poisoning by other agents primarily acting on the respiratory system, undeterminedT48.994A..., initial encounterT48.994D..., subsequent encounterT48.994S..., sequelaT48.995Adverse effect of other agents primarily acting on the respiratory systemT48.995A..., initial encounterT48.995D..., subsequent encounterT48.995S..., sequelaT48.996Underdosing of other agents primarily acting on the respiratory systemT48.996A..., initial encounterT48.996D..., subsequent encounterT48.996S..., sequela