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ICD-10 CM Code T48.9

T48 Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system

T48.9 Poisoning by, adverse effect of and underdosing of other and unspecified agents primarily acting on the respiratory system

T48.90 Poisoning by, adverse effect of and underdosing of unspecified agents primarily acting on the respiratory system
T48.99 Poisoning by, adverse effect of and underdosing of other agents primarily acting on the respiratory system

7th Character

The appropriate 7th character is to be added to each code from category T48

A - initial encounter
D - subsequent encounter
S - sequela

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