T42.6X5

T42.6X5: Adverse effect of other antiepileptic and sedative-hypnotic drugs

Non-billable headerICD-10-CM

T42.6X5 is a non-billable header ICD-10-CM code for adverse effect of other antiepileptic and sedative-hypnotic drugs. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T42

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above T42.6X5

A category’s note binds every code beneath it.

Written on T42.6: Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs

poisoning by, adverse effect of and underdosing of carbamazepine (T42.1-)

Excludes2 inherited from the categories above T42.6X5

Not part of this code, but both may be coded when both are present.

Written on T42: Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs

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

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead T42.6X5

3 child codes. Green means billable.