ICD-10 CM Code T43.021
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T43 Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
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T43.0 Poisoning by, adverse effect of and underdosing of tricyclic and tetracyclic antidepressants
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T43.02 Poisoning by, adverse effect of and underdosing of tetracyclic antidepressants
T43.021
Poisoning by tetracyclic antidepressants, accidental (unintentional)
Inclusion Term
- Poisoning by tetracyclic antidepressants NOS
Excludes Type 1
- appetite depressants (T50.5-)
- barbiturates (T42.3-)
- benzodiazepines (T42.4-)
- methaqualone (T42.6-)
- psychodysleptics [hallucinogens] (T40.7-T40.9-)
Excludes Type 2
- drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.- -F19.-)
7th Character
- The appropriate 7th character is to be added to each code from category T43
- A - initial encounter
- D - subsequent encounter
- S - sequela
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