Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]

**Excludes2:** - drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.-F19.-)

**7th character note:** - The appropriate 7th character is to be added to each code from category T40

**7th character:** - A: initial encounter - D: subsequent encounter - S: sequela