ICD-10 Code F11.91 – Opioid use, unspecified, in remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F11.91 – Opioid use, unspecified, in remission
What it is
This code identifies a history of opioid use disorder that is currently in remission. Use it when the patient is not meeting active disorder criteria, but the opioid-related condition remains clinically relevant.
Clinical signs
Clinical features vary; refer to documentation. Records may note sustained abstinence, no current opioid-related impairment, or remission status after prior opioid misuse or dependence.
When to use this code
Use this code when the provider documents opioid use disorder, unspecified, as in remission. It is appropriate for follow-up visits, problem lists, or ongoing behavioral health monitoring when the disorder is not active. If the note only says “history of” without remission, check documentation.
Do not use for
Do not use this code for active opioid use disorder, intoxication, withdrawal, or opioid poisoning. Also avoid it when the chart does not clearly state remission status.
Coding tip
Confirm that “in remission” is explicitly documented before assigning F11.91.