ICD-10 Code F11.90 – Opioid use, unspecified, uncomplicated (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F11.90 – Opioid use, unspecified, uncomplicated
What it is
F11.90 identifies opioid use that is documented but not further specified, without mention of complications. Use it when the record confirms opioid use disorder or use-related diagnosis, but does not provide a more specific subtype.
Clinical signs
Clinical features vary; refer to documentation. Common references include opioid-seeking behavior, impaired control over use, tolerance, withdrawal, or continued use despite harm, but the chart must support the diagnosis.
When to use this code
Use this code when the clinician documents opioid use and does not specify the type, pattern, or severity, and no complication is recorded. It also fits when the note states uncomplicated opioid use and no more detailed ICD-10-CM option is supported.
Review the assessment, history, and problem list carefully. If the record identifies dependence, abuse, intoxication, withdrawal, or opioid-induced disorder, choose the more specific code instead.
Do not use for
Do not use F11.90 for opioid dependence, abuse, intoxication, withdrawal, or opioid-induced conditions. Check documentation if the note suggests a more specific opioid-related diagnosis.
Coding tip
Code the most specific opioid-related diagnosis documented; if the provider only says “opioid use” without detail, F11.90 may be appropriate.