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ICD-10-CM Code F40.9
Phobic anxiety disorder, unspecified

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
Mental Health
Mental Health Code
Indicates that the ICD code is referenced in DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Version 5)
| ICD-10 from 2011 - 2016

F40.9 is a billable ICD code used to specify a diagnosis of phobic anxiety disorder, unspecified. A 'billable code' is detailed enough to be used to specify a medical diagnosis.


The ICD code F409 is used to code Phobia

A phobia is a type of anxiety disorder, usually defined as a persistent fear of an object or situation the affected person will go to great lengths to avoid, typically disproportional to the actual danger posed. If the feared object or situation cannot be avoided entirely, the affected person will endure it with marked distress and significant interference in social or occupational activities.

Specialty: Psychiatry
MeSH Code: D010698
ICD 9 Code: 300.20

A fear of spiders is one of the more common phobias

Source: Wikipedia

Coding Notes for F40.9 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Phobia NOS
Phobic state NOS

MS-DRG Mapping

  • DRG Group #882 - Neuroses except depressive.

ICD-10-CM Alphabetical Index References for 'F40.9 - Phobic anxiety disorder, unspecified'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code F40.9. Click on any term below to browse the alphabetical index.

Phobia, phobic (F40.9)
Fear complex or reaction (F40.9)
Phobia, phobic (F40.9) +

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Phobia, unspecified (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code F40.9 and a single ICD9 code, 300.20 is an approximate match for comparison and conversion purposes.


Parent Code: F40 - Phobic anxiety disorders

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/F409