ICD-10-CM › F01-F99 › F40-F48 › F44 Dissociative and conversion disorders › F44.9
Dissociative and conversion disorder, unspecified
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Dissociative and conversion disorder, unspecified
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from F44 Dissociative and conversion disorders
Excludes2 - not included here
- malingering [conscious simulation] (Z76.5)
Includes
- conversion hysteria
- conversion reaction
- hysteria
- hysterical psychosis
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Neurotic
- Mental > upset
- Mental > disorder
- Reaction > neurogenic
- Disorder > psychoneurotic
- Reaction > psychoneurotic
- Disorder > acute > psychotic
- Disorder > mental > neurotic
- Psychoneurosis, psychoneurotic
- Disorder > mental > psychoneurotic
- Hysteria, hysterical
- State > dissociative
- Reaction > conversion
- Reaction > hysterical
- Substitution disorder
- Disorder > dissociative
- Reaction > dissociative
- Attack, attacks > hysterical
- Dissociative reaction, state
- Neurosis, neurotic > conversion
- Neurosis, neurotic > hysterical
- Psychosis, psychotic > hysterical
- Hysteria, hysterical > psychosis, acute
- Conversion hysteria, neurosis or reaction
- Psychoneurosis, psychoneurotic > hysteria
- Psychosis, psychotic > acute > hysterical
Codes in the same group
| Code | Description | Status |
|---|---|---|
| F44.0 | Dissociative amnesia | Valid |
| F44.1 | Dissociative fugue | Valid |
| F44.2 | Dissociative stupor | Valid |
| F44.4 | Conversion disorder with motor symptom or deficit | Valid |
| F44.5 | Conversion disorder with seizures or convulsions | Valid |
| F44.6 | Conversion disorder with sensory symptom or deficit | Valid |
| F44.7 | Conversion disorder with mixed symptom presentation | Valid |
| F44.8 | Other dissociative and conversion disorders | Not billable |