F44.81 ICD-10-CM Code: Dissociative identity disorder
F44.81 maps to CMS-HCC V28 153. A source-labeled RAF reference is available. Confirm the documented diagnosis and applicable coding requirements. MEAT criteria · RAF Calculator · HCC coding software
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FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)
F44.81
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceDissociative identity disorder
A severe dissociative disorder where a person has multiple distinct personality states or identities, each with different memories, behaviors, and characteristics.
Buddy Insight
Dissociative identity disorder (formerly multiple personality disorder) is a severe dissociative condition characterized by two or more distinct personality states with disruption in identity and consciousness.
CMS-HCC V28
MappedHCC 153
Coefficient HCC 153: 0.396 (Community Non-Dual Aged (CNA))
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
Context neededHCC 090
Coefficient needs member context
ESRD/PACE
Context neededHCC 60
Coefficient needs member context
RXHCC
MappedHCC 133
Code-level coefficient reference
Code Book Path
Inclusion Terms
Official- Multiple personality disorder
Excludes 2
Official- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)Inherited from F01-F99, F44
- malingering [conscious simulation] (Z76.5)Inherited from F01-F99, F44
Related Codes
Includes
Official- disorders of psychological developmentInherited from F01-F99, F44
- conversion hysteriaInherited from F01-F99, F44
- conversion reactionInherited from F01-F99, F44
- hysteriaInherited from F01-F99, F44
- hysterical psychosisInherited from F01-F99, F44
Excludes 1
OfficialNo Excludes 1 notes are included in this display for F44.81. Check the code and parent instructions in the Code Book.
Code First
OfficialNo Code First sequencing instructions are included in this display for F44.81. Check the code and parent instructions in the Code Book.
Use Additional
OfficialNo Use Additional Code instructions are included in this display for F44.81. Check the code and parent instructions in the Code Book.
Code Also
OfficialNo Code Also instructions are included in this display for F44.81. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is F44.81 an HCC code?
Yes. F44.81 (Dissociative identity disorder) maps to HCC 153, Personality Disorders; Anorexia/Bulimia Nervosa under the CMS-HCC V28 risk adjustment model, with a source-labeled community non-dual aged reference coefficient of 0.396. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes. It is billable for payment year 2026.
Coder answer: F44.81 is billable and maps to V28 HCC 153, Personality Disorders; Anorexia/Bulimia Nervosa. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.
- Code
- F44.81
- Description
- Dissociative identity disorder
- HCC (V28)
- HCC 153 — Personality Disorders; Anorexia/Bulimia Nervosa
- RAF reference coefficient
- 0.396
- Billable
- Yes
- Payment year
- 2026
HCC Category Mapping
These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.
Work F44.81 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →
MEAT review for F44.81
For F44.81, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule.
- MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
- EEvaluate: test results, medication response, or physical findings reviewed by the provider
- AAssess: explicit mention in the assessment or plan with acknowledgment of status
- TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis
Coder workflow notes
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What This Code Means
F44.81 is the ICD-10-CM diagnosis code for dissociative identity disorder. A severe dissociative disorder where a person has multiple distinct personality states or identities, each with different memories, behaviors, and characteristics. F44.81 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (f40-f48).
Under the CMS-HCC V28 risk adjustment model, F44.81 maps to Personality Disorders; Anorexia/Bulimia Nervosa (HCC 153) with a source-labeled community, non-dual, aged reference coefficient of 0.396. For CY2026 non-PACE Medicare Advantage, CMS uses 100% of the 2024 CMS-HCC model (V28). PACE uses a separate model blend. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.
Document the number of identities if specified and any history of trauma. For F44.81, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for F44.81 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document the number of identities if specified and any history of trauma
- •Ensure thorough psychiatric evaluation has confirmed the diagnosis before coding
Clinical Significance
Dissociative identity disorder (formerly multiple personality disorder) is a severe dissociative condition characterized by two or more distinct personality states with disruption in identity and consciousness. It is strongly associated with severe childhood trauma and carries high psychiatric morbidity. This diagnosis significantly impacts risk adjustment across multiple models, reflecting the intensive psychiatric treatment required.
Documentation Requirements
- ✓Documentation of two or more distinct personality states or identities with characteristic patterns of perception and behavior
- ✓Evidence of recurrent gaps in recall of everyday events, personal information, or traumatic events inconsistent with ordinary forgetting
- ✓Symptoms cause clinically significant distress or functional impairment
- ✓Documented psychiatric evaluation confirming diagnosis using DSM-5 criteria
- ✓Documentation that symptoms are not attributable to substance use or another medical condition
Commonly Confused Codes
- •F44.89 (Other dissociative and conversion disorders): use for dissociative conditions not meeting full criteria for dissociative identity disorder
- •F44.9 (Dissociative and conversion disorder, unspecified): avoid when specific type can be identified
- •F48.1 (Depersonalization-derealization syndrome): involves detachment from self/surroundings but NOT separate identity states
- •F60.3 (Borderline personality disorder): may involve identity disturbance but not distinct alternate personalities
- •F44.0 (Dissociative amnesia): memory loss without distinct personality states