Dissociative and conversion disorders
In Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48), chapter 5: Mental, Behavioral and Neurodevelopmental Disorders
10 billable codes under F44: none are a CC or MCC; 3 map to HCC 153 (Personality Disorders; Anorexia/Bulimia Nervosa).An HCC counts toward a Medicare Advantage patient's risk score.
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Instructional notes
Includes: conditions that are coded here
- conversion hysteria
- conversion reaction
- hysteria
- hysterical psychosis
Excludes2: not included here, code separately if applicable
- malingering [conscious simulation] (Z76.5)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers psychological pain disorders, substance use, abuse, dependence and remission, factitious disorder including Munchausen by proxy, and dementia severity.
- Pain disorders related to psychological factors (page 43)
- Mental and behavioral disorders due to psychoactive substance use (page 43)
- Factitious Disorder (page 44)
- Dementia (page 45)
All codes under F44
F44 can't be used on a claim. Pick a billable code below; grey headings group them.
- F44.0Dissociative amnesia
- F44.1Dissociative fugue
- F44.2Dissociative stupor
- F44.4Conversion disorder with motor symptom or deficit
- F44.5Conversion disorder with seizures or convulsions
- F44.6Conversion disorder with sensory symptom or deficit
- F44.7Conversion disorder with mixed symptom presentation
- F44.8Other dissociative and conversion disorders
- F44.81Dissociative identity disorder
- F44.89Other dissociative and conversion disorders
- F44.9Dissociative and conversion disorder, unspecified
F44 MS-DRGs
As the principal diagnosis, the billable codes under F44 group to MS-DRG 880, 883, or 887 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 880 Acute Adjustment Reaction and Psychosocial Dysfunction (8 of 10 codes)
- DRG 883 Disorders of Personality and Impulse Control (1 of 10 codes)
- DRG 887 Other Mental Disorder Diagnoses (1 of 10 codes)
Other codes that refer to F44
Notes on these codes point to F44.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Mental Disorders
Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day..
Read more about mental disorders on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.