FY2027 ICD-10-CM reference
F40: Phobic anxiety disorders
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Phobic anxiety disorders. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
More specific FY2027 codes
- F40.0: AgoraphobiaNonbillable heading
- F40.1: Social phobiasNonbillable heading
- F40.2: Specific (isolated) phobiasNonbillable heading
- F40.8: Other phobic anxiety disordersBillable code
- F40.9: Phobic anxiety disorder, unspecifiedBillable code
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Includes
disorders of psychological development
Source: F01-F99 (chapter, inherited).
Excludes2
symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Source: F01-F99 (chapter, inherited).
Compare the FY2027 additions, removals and billable-status changes
What does F40 mean in FY2027?
The official ICD-10-CM descriptor is Phobic anxiety disorders. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is F40 billable in FY2027?
The FY2027 order file marks F40 as a nonbillable heading. Select a complete billable child code.
Does F40 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition