Skip to content
F40.8 · Billable

2026 ICD-10-CM Diagnosis Code F40.8

Other phobic anxiety disorders

About F40.8

Code

F40.8

Description

Other phobic anxiety disorders

Billable

Yes — billable on its own

Parent code

F40 (Phobic anxiety disorders)

Category

F40-F49 — Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders

Set

ICD-10-CM 2026

Clinical context

Inherited from F40 (Phobic anxiety disorders)

F40 codes phobic anxiety disorders — including agoraphobia (F40.0x), social phobia (F40.1x), and specific phobias (F40.2x). Specific phobia subtypes are coded by trigger category: animal, natural environment, blood-injection-injury, situational, and other. Document the feared stimulus, avoidance behavior, and degree of impairment to support the most specific code.

Code details

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.

Sources

  • Centers for Medicare & Medicaid Services — 2026 ICD-10-CM
  • AAPC — ICD-10-CM Code Lookup
  • CDC — ICD-10-CM Official Guidelines for Coding and Reporting

This reference is provided for billing and documentation guidance only. It is not medical advice. For clinical decision-making, consult the current CMS ICD-10-CM Official Guidelines for Coding and Reporting, and verify code applicability against the patient's documented clinical findings.

Your evenings belong to you. Not your notes.

Join the therapists who stopped staying late for documentation and started focusing on what matters — their patients.

Start Free TrialBook a Demo

7-day free trial · Cancel anytime · 30-day money-back guarantee