2027 ICD-10-CM Diagnosis Code F44.89Other dissociative and conversion disorders
ICD-10-CM Codes›F01–F99›F40-F48›F44
- Billable — Valid for Submission
- Not Chronic
F44.89 is a billable ICD-10-CM diagnosis code for other dissociative and conversion disorders. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 887. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Trauma- and stressor-related disorders.
F44.89 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 133 for payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
F44.89 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Chronic confusional state
- Complex dissociative intrusion disorder
- Confusional state
- Couvade
- Dissociative confusion
- Dissociative neurological symptom disorder co-occurrent with alteration of consciousness
- Dissociative neurological symptom disorder co-occurrent with cognitive impairment
- Dissociative neurological symptom disorder co-occurrent with dizziness
- Dissociative neurological symptom disorder co-occurrent with symptom of speech production
- Dissociative neurological symptom disorder with swallowing symptom
- Dissociative neurological symptom disorder with visual symptom
- Dissociative possession disorder
- Dissociative trance
- Ganser syndrome
- Possession trance disorder
- Psychogenic vertigo
- Sleep-related dissociative disorder
- Swallowing symptoms
- Twilight sleep
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F44.89: its own notes plus those printed at F44 and Chapter 5. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- conversion hysteria
- conversion reaction
- hysteria
- hysterical psychosis
- disorders of psychological development
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Ganser's syndrome
- Psychogenic confusion
- Psychogenic twilight state
- Trance and possession disorders
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- malingering [conscious simulation] (Z76.5)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name F44.89, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming F44.89: they are not reported together with it, unless the two conditions are unrelated.
Excludes2 2
These codes carry an Excludes2 note naming F44.89: its condition is not part of those codes, and both may be reported when the patient has both.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Accommodation (disorder) See Also: condition;
hysterical paralysis of F44.89
hysterical F44.89
hysterical F44.89
mental state (psychogenic) F44.89
psychogenic F44.89
reactive (from emotional stress, psychological trauma) F44.89
Disorder (of) See Also: Disease;
other specified NEC F44.89
trance and possession F44.89
hysterical F44.89
Dream state, hysterical F44.89
hysterical F44.89
Hyperesthesia (body surface) R20.3
hysterical F44.89
hysterical F44.89
Mania (monopolar) See Also: Disorder, mood, manic episode;
hysterical F44.89
Paralysis, paralytic (complete) (incomplete) G83.9
accommodation See Also: Paresis, of accommodation;
hysterical F44.89
hysterical F44.89
hysterical F44.89
confusional (psychogenic) F44.89
psychogenic, twilight F44.89
psychogenic F44.89
hysterical F44.89
psychogenic F44.89
hysterical F44.89
hysterical F44.89
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
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..
The full article covers:
- What are mental disorders?
- What are some types of mental disorders?
- What causes mental disorders?
- Who is at risk for mental disorders?
- How are mental disorders diagnosed?
- What are the treatments for mental disorders?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert F44.89 to ICD-9-CMHistory
Code HistoryHistory
Questions About F44.89Overview
What is the ICD-10 code for other dissociative and conversion disorders?
The ICD-10-CM code for other dissociative and conversion disorders is F44.89 (sometimes written as F4489). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is F44.89 (Other dissociative and conversion disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other dissociative and conversion disorders on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does F44.89 group to?
When other dissociative and conversion disorders is the principal diagnosis on an inpatient stay, it groups to MS-DRG 887 (other Mental Disorder Diagnoses), which carries a relative weight of 1.1154. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of F44.89?
Under the General Equivalence Mappings, other dissociative and conversion disorders converts to ICD-9-CM 298.2 (reactive confusion) and 300.16 (factitious dis w symptom). The mapping is approximate, so confirm the match fits the documentation.
Does F44.89 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: F44.89 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 133 (Anxiety and Other Psychiatric Disorders).
