F20.9 — Schizophrenia, unspecified
F20.9 is a billable, specific ICD-10-CM code for schizophrenia, unspecified. It is valid for submission on a claim.
Excludes1 inherited from the categories above F20.9
These are not written on F20.9, but they bind it: a note on a category applies to every code beneath it. Billing F20.9 with anything listed here is a denial.
Excludes2 inherited from the categories above F20.9
Also inherited, and the opposite of Excludes1: these conditions are not part of F20.9, but a patient can have both, so you may code both.
Other codes that can never be billed with F20.9
These codes carry an Excludes1 note pointing at F20.9. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading F20.9 alone.
- F25Schizoaffective disorders
Risk adjustment
F20.9 risk-adjusts. Under the CMS-HCC V28 model it maps to these categories:
- HCC 151 Schizophrenia0.511 RAF
- HCC 151 Schizophrenia0.511 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
F20.9 is named in 11 Medicare coverage policies — 10 listing it as supporting medical necessity, and 1 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52434Health and Behavior Assessment/Intervention – Medical Policy Articlenot covered
- A56614Billing and Coding: Psychiatric Inpatient Hospitalization
- A56645Billing and Coding: Controlled Substance Monitoring and Drugs of Abuse Testing
- A56818Billing and Coding: Urine Drug Testing
How F20.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to F20.9.
- Schizophrenia, schizophrenic
- Schizophrenia, schizophrenic›childhood type
- Schizophrenia, schizophrenic›chronic undifferentiated
- Syndrome›schizophrenic, of childhood NEC
- Schizophrenia, schizophrenic›undifferentiated›chronic
Code history
F20.9 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share F20. If F20.9 is not quite right, the correct code is usually one of these.
Questions about F20.9
- Is F20.9 a billable ICD-10-CM code?
- Yes. F20.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does F20.9 sit in the tabular list?
- Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F20-F29).
- What cannot be coded together with F20.9?
- F20.9 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above F20.9 (F20) and apply to it just the same.