2026 ICD-10-CM Diagnosis Code F17

Code attributes

• Non-billable/Non-specific code

Coding rules

• Specify the leaf code — the parent code (e.g. F32) is a navigational header; billing requires a leaf code (F32.0, F32.1, etc.) that matches the documented presentation.
• Document onset, course, and severity (mild / moderate / severe) plus functional impact. Payers use this combination when adjudicating medical necessity.
• Attach a validated instrument score (PHQ-9, GAD-7, PCL-5, or equivalent) at intake and at follow-up where applicable. Objective measures support code selection and continued authorization.
• Review at every visit and update if presentation changes — including remission and partial remission states.

Clinical information

F17 codes nicotine dependence — distinct from other substance disorders in that it doesn't include an 'abuse' category. Subtypes differentiate cigarettes (F17.21x), chewing tobacco (F17.22x), and other tobacco products (F17.29x). Document withdrawal symptoms when present (F17.21\3) and capture this code on any encounter where smoking cessation is part of the treatment plan.