F44.9 — Dissociative and conversion disorder, unspecified
F44.9 is a billable, specific ICD-10-CM code for dissociative and conversion disorder, unspecified. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Dissociative disorder NOS
Risk adjustment
F44.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
F44.9 is named in 12 Medicare coverage policies — 11 listing it as supporting medical necessity, and 1 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52434Health and Behavior Assessment/Intervention – Medical Policy Articlenot covered
- A56619Billing and Coding: Nerve Conduction Studies and Electromyography
- A56645Billing and Coding: Controlled Substance Monitoring and Drugs of Abuse Testing
- A56756Billing and Coding: Home Health - Psychiatric Care
How F44.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to F44.9.
- Conversion hysteria, neurosis or reaction
- Dissociative reaction, state
- Hysteria, hysterical(conversion) (dissociative state)
- Substitution disorder
- Attack, attacks›hysterical
- Disorder›dissociative
- Hysteria, hysterical›psychosis, acute
- Neurosis, neurotic›conversion
- Neurosis, neurotic›hysterical
- Psychoneurosis, psychoneurotic›hysteria
- Psychosis, psychotic›hysterical(acute)
- Reaction›conversion
Related codes at this level
Codes that share F44. If F44.9 is not quite right, the correct code is usually one of these.
- 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
Questions about F44.9
- Is F44.9 a billable ICD-10-CM code?
- Yes. F44.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does F44.9 sit in the tabular list?
- Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48).