ICD-10 Code F12.9 – Cannabis use, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F12.9 – Cannabis use, unspecified
What it is
F12.9 identifies cannabis use when the record does not specify a more detailed cannabis-related diagnosis. Use it for documentation that confirms cannabis involvement but lacks further detail.
Clinical signs
Clinical features vary; refer to documentation. Notes may mention cannabis use without specifying intoxication, dependence, withdrawal, or cannabis-induced disorder.
When to use this code
Use this code when the provider documents cannabis use, marijuana use, or cannabis-related use disorder details are not available. It is appropriate when the chart confirms use but does not support a more specific F12 code. Check documentation if the note suggests intoxication, dependence, or withdrawal.
Do not use for
Do not use F12.9 when the record clearly documents cannabis dependence, abuse, intoxication, withdrawal, or a cannabis-induced mental disorder. Those situations require a more specific code.
Coding tip
If the note is vague, code only what is explicitly documented and query for clarification when a more specific cannabis diagnosis may apply.