2026 ICD-10-CM Diagnosis Code F44.1Dissociative fugue
ICD-10-CM Codes›F01–F99›F40-F48›F44
- Billable — Valid for Submission
- Risk Adjusts — HCC 153
- Chronic Condition
F44.1 is a billable ICD-10-CM diagnosis code for dissociative fugue. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 880. Coders also document this condition as psychogenic fugue. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Trauma- and stressor-related disorders.
For Medicare Advantage risk adjustment, F44.1 maps to CMS-HCC Category 153 (Personality Disorders; Anorexia/Bulimia Nervosa) under the V28 model, adding a risk factor of about 0.396 for a community, non-dual, aged beneficiary in payment year 2026.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
F44.1 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2026.
Source: CMS Payment Year 2026 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.
- Psychogenic fugue
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Dissociative amnesia with dissociative fugue
Type 2 Excludes
- postictal fugue in epilepsy G40
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
dissociative F44.1
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Dissociative Fugue
a disorder characterized by sudden, unexpected travel away from one's home or place of work accompanied by an inability to recall one's past; the individual is confused about his or her personal identity and may assume a new identity.
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 F44.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About F44.1Overview
What is the ICD-10 code for dissociative fugue?
The ICD-10-CM code for dissociative fugue is F44.1 (sometimes written as F441). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is F44.1 (Dissociative and conversion disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report dissociative fugue on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does F44.1 group to?
When dissociative fugue is the principal diagnosis on an inpatient stay, it groups to MS-DRG 880 (acute Adjustment Reaction and Psychosocial Dysfunction), which carries a relative weight of 0.9602. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of F44.1?
Under the General Equivalence Mappings, dissociative fugue converts to ICD-9-CM 300.13 (dissociative fugue). The mapping is a direct match.
What HCC is F44.1?
F44.1 (dissociative fugue) maps to CMS-HCC Category 153 (Personality Disorders; Anorexia/Bulimia Nervosa), commonly written as HCC 153, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2026. It mapped to HCC 60 under the retired V24 model. It also maps in the ESRD (V24) model. In the Part D prescription drug model it maps to RxHCC 133.
Does F44.1 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, F44.1 adds a risk adjustment factor of about 0.396 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.199 to 0.464 depending on the payment segment). A more severe related category (HCC 151 and HCC 152) supersedes it when both are reported. See the full factor table on the HCC 153 category page.
