ICD-10-CM > S00-T88 > T36-T50 > T48 > T48.9 > T48.90 T48.90 Poisoning by, adverse effect of and underdosing of unspecified agents primarily acting on the respiratory system Non-Billable/Non-Specific Codes T48.901Poisoning by unspecified agents primarily acting on the respiratory system, accidental (unintentional)T48.901A..., initial encounterT48.901D..., subsequent encounterT48.901S..., sequelaT48.902Poisoning by unspecified agents primarily acting on the respiratory system, intentional self-harmT48.902A..., initial encounterT48.902D..., subsequent encounterT48.902S..., sequelaT48.903Poisoning by unspecified agents primarily acting on the respiratory system, assaultT48.903A..., initial encounterT48.903D..., subsequent encounterT48.903S..., sequelaT48.904Poisoning by unspecified agents primarily acting on the respiratory system, undeterminedT48.904A..., initial encounterT48.904D..., subsequent encounterT48.904S..., sequelaT48.905Adverse effect of unspecified agents primarily acting on the respiratory systemT48.905A..., initial encounterT48.905D..., subsequent encounterT48.905S..., sequelaT48.906Underdosing of unspecified agents primarily acting on the respiratory systemT48.906A..., initial encounterT48.906D..., subsequent encounterT48.906S..., sequela