F44.89 Other dissociative and conversion disorders

Billable ICD-10-CM code, FY2026.

Applicable to

• Ganser's syndrome
• Psychogenic confusion
• Psychogenic twilight state
• Trance and possession disorders

Applies from F44 Dissociative and conversion disorders

Includes

• conversion hysteria
• conversion reaction
• hysteria
• hysterical psychosis

Excludes2 (not included here)

• malingering [conscious simulation] (Z76.5)

Risk adjustment (HCC)

• RxHCC V08: HCC 133 — Anxiety and Other Psychiatric Disorders

MS-DRG index

Defines the logic of DRG(s) 887 in MDC 19.

Approximate ICD-9-CM (GEMs)

• 298.2 Reactive confusion (approximate)
• 300.16 Factitious disorder with predominantly psychological signs and symptoms (approximate)

Code annotations containing back-references to F44.89

Back-references to F44

• Type 2 Excludes: F45 Somatoform disorders ("dissociative and conversion disorders (F44.-)")
• Type 2 Excludes: F93.0 Separation anxiety disorder of childhood ("nonpsychotic mental disorders (F40-F48)")
• Type 1 Excludes: R41 Other symptoms and signs involving cognitive functions and awareness ("dissociative [conversion] disorders (F44.-)")

Diagnosis Index entries for F44.89

• Accommodation (disorder) › hysterical paralysis of
• Anorexia › hysterical
• Attack, attacks › unconsciousness › hysterical
• Collapse › hysterical
• Confusion, confused › mental state (psychogenic)
• Confusion, confused › psychogenic
• Confusion, confused › reactive (from emotional stress, psychological trauma)
• Delirium, delirious (acute or subacute) (not alcohol- or drug-induced) › hysterical
• Depression (acute) (mental) › hysterical
• Disorder (of) › dissociative › other specified NEC
• Disorder (of) › trance and possession
• Dizziness › hysterical
• Dream state, hysterical
• Ganser's syndrome (hysterical)
• Giddiness › hysterical
• Hyperesthesia (body surface) › larynx (reflex) › hysterical
• Hyperesthesia (body surface) › pharynx (reflex) › hysterical
• Mania (monopolar) › hysterical
• Paralysis, paralytic (complete) (incomplete) › accommodation › hysterical
• Sleep › walking › hysterical
• Somnambulism › hysterical
• State (of) › confusional (psychogenic)
• State (of) › confusional (psychogenic) › reactive (from emotional stress, psychological trauma)
• State (of) › psychogenic, twilight
• State (of) › twilight › psychogenic
• Trance › hysterical
• Twilight state › psychogenic
• Vertigo › hysterical
• Walking › sleep › hysterical

Nearby codes

• F44.5 Conversion disorder with seizures or convulsions
• F44.6 Conversion disorder with sensory symptom or deficit
• F44.7 Conversion disorder with mixed symptom presentation
• F44.8 Other dissociative and conversion disorders
• F44.81 Dissociative identity disorder
• F44.89 Other dissociative and conversion disorders (this code)
• F44.9 Dissociative and conversion disorder, unspecified