ICD-10 Code F15.99 – Other stimulant use, unspecified with unspecified stimulant-induced disorder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F15.99 – Other stimulant use, unspecified with unspecified stimulant-induced disorder
What it is
This code identifies stimulant use when the specific stimulant is not named and the related stimulant-induced disorder is also not specified. Use it for documentation that confirms stimulant-related harm but does not define the exact substance or disorder type.
Clinical signs
Clinical features vary; refer to documentation. Records may describe intoxication, withdrawal, or other stimulant-related mental or behavioral changes without naming the stimulant or a more specific induced disorder.
When to use this code
Use this code when the provider documents stimulant use and an unspecified stimulant-induced disorder, but the chart does not identify the exact stimulant or the precise disorder category. It is appropriate when the note is clear enough to support a stimulant-related diagnosis, yet not specific enough for a more detailed code. Check documentation before coding from problem lists alone.
Do not use for
Do not use this code when the stimulant is identified and a more specific ICD-10-CM code is available. Also avoid it if the record describes use without any stimulant-induced disorder; check documentation.
Coding tip
Query the provider if the stimulant type or induced disorder is unclear, because specificity may change the code selection.