F44.9

Dissociative and conversion disorder, unspecified

Billable / specific

F44.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Dissociative disorder NOS

Includes (from F44)

  • disorders of psychological development
  • conversion hysteria
  • conversion reaction
  • hysteria
  • hysterical psychosis

Excludes2

Not included here — may be reported together when both conditions exist.

  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99) (from F44)
  • malingering [conscious simulation] (Z76.5) (from F44)

Also known as

  • Dissociative disorder NOS
  • Attack, attacks, hysterical
  • Conversion hysteria, neurosis or reaction
  • Disorder, dissociative
  • Dissociative reaction, state
  • Hysteria, hysterical
  • Hysteria, hysterical, psychosis, acute
  • Neurosis, neurotic, conversion
  • Neurosis, neurotic, hysterical
  • Psychoneurosis, psychoneurotic, hysteria
  • Psychosis, psychotic, acute, hysterical
  • Psychosis, psychotic, hysterical
  • Reaction, conversion
  • Reaction, dissociative
  • Reaction, hysterical
  • State, dissociative

Parent code

  • F44Dissociative and conversion disordersHeader

Related codes

  • F44.0Dissociative amnesiaBillable
  • F44.1Dissociative fugueBillable
  • F44.2Dissociative stuporBillable
  • F44.4Conversion disorder with motor symptom or deficitBillable
  • F44.5Conversion disorder with seizures or convulsionsBillable
  • F44.6Conversion disorder with sensory symptom or deficitBillable
  • F44.7Conversion disorder with mixed symptom presentationBillable
  • F44.8Other dissociative and conversion disordersHeader

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