F44.81
BillableDissociative identity disorder
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is F44.81 an HCC code?
Yes. F44.81 maps to Personality Disorders and Dissociative Disorders under the CMS-HCC V28 risk adjustment model (and Personality Disorders under V24).
HCC Category Mapping
RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.
MEAT Criteria for F44.81
For F44.81 to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically — it has to be re-documented and supported each calendar year.
- 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
Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed F44.81 during that encounter — not just copy-forwarded from a problem list.
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 and Dissociative Disorders (HCC 153) with a community, non-dual, aged base RAF weight of 1.241. Under the older CMS-HCC V24 model, F44.81 maps to Personality Disorders (HCC 60) with a community, non-dual, aged base RAF weight of 0.000. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.
Document the number of identities if specified and any history of trauma. Because F44.81 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. 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, RAF weights, 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