ICD-10 Code F18.21 – Inhalant dependence, in remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F18.21 – Inhalant dependence, in remission
What it is
This code identifies a past inhalant dependence that is now in remission. Use it when the patient no longer meets criteria for active dependence, but the history remains clinically relevant.
Clinical signs
Clinical features vary; refer to documentation. Typical records note prior compulsive inhalant use, loss of control, and current remission without active dependence symptoms.
When to use this code
Use F18.21 when the clinician documents inhalant dependence as “in remission,” “sustained remission,” or similar wording. It may support behavioral health history, recovery status, or ongoing monitoring. Do not assume remission unless the record clearly states it.
Do not use for
Do not use this code for active inhalant dependence, abuse, or simple past use without dependence. Check documentation if the chart only mentions exposure, intoxication, or unspecified substance use.
Coding tip
Code the remission status only when the provider explicitly documents it; otherwise, query or code the active or unspecified condition supported by the record.