F20.1
BillableDisorganized schizophrenia
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is F20.1 an HCC code?
Yes. F20.1 maps to Schizophrenia under the CMS-HCC V28 risk adjustment model (and Schizophrenia 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 F20.1
For F20.1 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 F20.1 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
F20.1 is the ICD-10-CM diagnosis code for disorganized schizophrenia. A form of schizophrenia characterized by disorganized speech, behavior, and thinking, often with flat or inappropriate emotional responses. F20.1 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (f20-f29).
Under the CMS-HCC V28 risk adjustment model, F20.1 maps to Schizophrenia (HCC 151) with a community, non-dual, aged base RAF weight of 0.244. Under the older V24 model, F20.1 mapped to the same category but with a base RAF weight of 0.508 — V28 recalibrated weights across the entire model. 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.
Look for documentation of disorganized speech patterns and incoherent thought processes. Because F20.1 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 F20.1 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Look for documentation of disorganized speech patterns and incoherent thought processes
- •Note any documentation of inappropriate affect or emotional responses to support this diagnosis
Clinical Significance
Disorganized schizophrenia (hebephrenic type) is characterized by disorganized speech, disorganized behavior, and flat or inappropriate affect. This subtype typically has an earlier onset and poorer prognosis than paranoid schizophrenia, as the disorganization significantly impairs the patient's ability to perform activities of daily living. The high HCC weight reflects the intensive, long-term care needs of these patients who often require supervised living arrangements.
Documentation Requirements
- ✓Diagnosis of schizophrenia with disorganized features by a qualified mental health professional
- ✓Documentation of disorganized speech patterns (loose associations, tangentiality, word salad)
- ✓Description of disorganized behavior (inability to organize goal-directed activity, neglect of self-care)
- ✓Assessment of affect (flat, blunted, or inappropriate emotional responses)
- ✓Current functional level and need for supervised care
- ✓Medication regimen and psychosocial intervention plan
Commonly Confused Codes
- •F20.0 — Paranoid schizophrenia features paranoid delusions as dominant; disorganized features are dominant in F20.1
- •F20.2 — Catatonic schizophrenia features motor disturbances rather than disorganization
- •F20.3 — Undifferentiated schizophrenia when features overlap multiple subtypes
- •F20.9 — Schizophrenia, unspecified should not be used when disorganized features are clearly documented
- •F06.2 — Psychotic disorder with delusions due to known physiological condition; rule out medical causes