F11.9Opioid use, unspecified

F11.9 is the ICD-10-CM diagnosis code for opioid use, unspecified. It belongs to category F11 (opioid related disorders), block F10-F19 (mental and behavioral disorders due to psychoactive substance use) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

Within F11, choose F11.9 (use, unspecified) only when documentation doesn't support a more specific option: abuse (F11.1) and dependence (F11.2).

To report this condition, pick the subcode that matches the documentation: F11.90 (uncomplicated), F11.91 (in remission), F11.92 (with intoxication), F11.93 (with withdrawal), F11.94 (with opioid-induced mood disorder), F11.95 (with opioid-induced psychotic disorder), F11.98 (with other specified opioid-induced disorder) and F11.99 (with unspecified opioid-induced disorder).

Don't report F11.9 together with the conditions in its Excludes1 note: opioid abuse (F11.1-) and opioid dependence (F11.2-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.