Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified (T43) ICD-10-CM

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

• appetite depressants T50.5
• barbiturates T42.3
• benzodiazepines T42.4
• drug dependence and related mental and behavioral disorders due to psychoactive substance use F10 F19
• methaqualone T42.6
• psychodysleptics [hallucinogens] T40.7 T40.9

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

• The appropriate 7th character is to be added to each code from category T43

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

• A - initial encounter
• D - subsequent encounter
• S - sequela