ICD-10 Code F17.21 – Nicotine dependence, cigarettes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F17.21 – Nicotine dependence, cigarettes
What it is
F17.21 identifies dependence on nicotine from cigarettes. Use it when the record shows ongoing cigarette use with addiction, not just a history of smoking.
Clinical signs
Common findings include a strong urge to smoke, difficulty cutting down, and continued use despite harm. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents nicotine dependence specifically tied to cigarettes. It may appear in problem lists, assessment notes, or counseling visits where dependence is confirmed. Code it when the note distinguishes dependence from simple tobacco use or past smoking history.
Do not use for
Do not use F17.21 for passive smoke exposure, former smoking without current dependence, or nonspecific tobacco use. Check documentation if the record does not clearly state cigarette dependence.
Coding tip
Look for the word “dependence” and the cigarette source before assigning F17.21.