F40.9 Phobic anxiety disorder, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Phobia NOS
• Phobic state NOS

Risk adjustment (HCC)

• RxHCC V08: HCC 133 — Anxiety and Other Psychiatric Disorders

MS-DRG index

Defines the logic of DRG(s) 882 in MDC 19.

Approximate ICD-9-CM (GEMs)

• 300.20 Phobia, unspecified (approximate)

Code annotations containing back-references to F40.9

Back-references to F40

• Type 2 Excludes: F06.4 Anxiety disorder due to known physiological condition ("anxiety disorders, not due to known physiological condition or unspecified (F40.-, F41.-)")
• Type 2 Excludes: F90 Attention-deficit hyperactivity disorders ("anxiety disorders (F40.-, F41.-)")
• Type 2 Excludes: F93.0 Separation anxiety disorder of childhood ("nonpsychotic mental disorders (F40-F48)")

Diagnosis Index entries for F40.9

• Disorder (of) › anxiety › phobic
• Disorder (of) › psychogenic NOS › phobic
• Fear complex or reaction
• Neurosis, neurotic › phobic
• Phobia, phobic
• Phobia, phobic › reaction
• Phobia, phobic › state
• Reaction › fear
• Reaction › phobic
• State (of) › phobic

Nearby codes

• F40.29 Other specified phobia
• F40.290 Androphobia
• F40.291 Gynephobia
• F40.298 Other specified phobia
• F40.8 Other phobic anxiety disorders
• F40.9 Phobic anxiety disorder, unspecified (this code)