10ICD Code Hub

F19.9

Header — not billable

Other psychoactive substance use, unspecified

The ICD-10 code for other psychoactive substance use, unspecified is F19.9.

F19.9 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 10 more specific codes below.

Clinical notes

Excludes1 (not coded here)

An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).

  • other psychoactive substance abuse (F19.1-)
  • other psychoactive substance dependence (F19.2-)

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

Child codes under F19.9

Related codes in this category