F11.9
Opioid use, unspecified
Choose the additional character
F11.9 needs more characters to be billable. Pick the specific code below.
- F11.90Opioid use, unspecified, uncomplicatedBillable
- F11.91Opioid use, unspecified, in remissionBillable
- F11.92Opioid use, unspecified with intoxicationMore levels
- F11.93Opioid use, unspecified with withdrawalBillable
- F11.94Opioid use, unspecified with opioid-induced mood disorderBillable
- F11.95Opioid use, unspecified with opioid-induced psychotic disorderMore levels
- F11.98Opioid use, unspecified with other specified opioid-induced disorderMore levels
- F11.99Opioid use, unspecified with unspecified opioid-induced disorderBillable
This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
Official Guidelines for F11.9
FY 2026 ›Sections that reference F11.9
- I.C.5.b.3)Psychoactive Substance Use, Unspecified
As with all other unspecified diagnoses, the codes for unspecified psychoactive substance use (F10.9-, F11.9-, F12.9-, F13.9-, F14.9-, F15.9-, F16.9-, F18.9-, F19.9-) should only be assigned based on provider documentation and when …
- I.C.5.b.1)In Remission
Selection of codes describing “in remission” for categories F10-F19, Mental and behavioral disorders due to psychoactive substance use (categories F10-F19 with -.11, -.21, -.91) requires the …
- I.C.15.l.3)Drug use during pregnancy, childbirth and the puerperiumChapter 15
… Secondary code(s) from categories F11-F16 and F18-F19 should also be assigned to identify manifestations of the drug use.
Sections whose FY 2026 text names F11.9, its F11 category, or a range containing it — the chapter guidance above is the authoritative source.