Alphabetic Index FY2027

F44.5

Conversion disorder with seizures or convulsions

FY2027Chapter 5: Mental, Behavioral and Neurodevelopmental disorders/F40–F48 Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders

BillableComplete code, valid to report
Care settingsHome Health Primary · Behavioral HealthIPF Primary · MS-DRG 880

F44.5 (also written F445) is a billable ICD-10-CM diagnosis code for conversion disorder with seizures or convulsions. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 10 codes in category F44 (Dissociative and conversion disorders). The Alphabetic Index lists it under 16 entries. Its coding notes include 2 Excludes2 entries.

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from F44 Dissociative and conversion disorders
  • malingering [conscious simulation] (Z76.5)
Also from chapter/block level (1 note)
Inherited from Chapter 5 Mental, Behavioral and Neurodevelopmental disorders
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Care settings

How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.

Home Health Primary

Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the Behavioral Health clinical group.

Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026

IPF Primary

IPF MS-DRG adjustment. A principal diagnosis of this code groups to this MS-DRG:

MS-DRGDescriptionFactor
880Acute adjustment reaction & psychosocial dysfunction1.08
A principal diagnosis that groups to none of the 19 designated MS-DRGs gets no MS-DRG adjustment. Otherwise the claim still receives the federal per diem base rate and the other adjustments.

Source: CMS IPF PPS FY 2027 final rule (CMS-1847-F), Addendum A; code lists from the CMS MS-DRG Definitions Manual v44; effective for discharges on or after October 1, 2026

Includes

Further defines or gives examples of the content of the category.

Inherited from F44 Dissociative and conversion disorders
  • conversion hysteria
  • conversion reaction
  • hysteria
  • hysterical psychosis
Also from chapter/block level (1 note)
Inherited from Chapter 5 Mental, Behavioral and Neurodevelopmental disorders
  • disorders of psychological development

Inclusion terms

Conditions classified to this code.

This code
  • Conversion disorder with attacks or seizures
  • Dissociative convulsions

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 16 entries

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