ICD-10 Codes for Psychotic Disorder: 2026 Guide
September 21, 2026
“Psychosis” is a description of what the patient is experiencing, but it doesn’t tell you necessarily what the diagnosis should be that you are going to report.
Hallucinations, delusions, paranoia or disorganized thinking can be caused by schizophrenia, schizoaffective disorder, bipolar disorder, substance use or some medical conditions. What do you call those symptoms? That’s how it works in ICD-10-CM.
For providers, the goal is not to document a code. It is to make the clinical diagnosis clear enough that the appropriate ICD-10-CM code can accurately follow from it.
The F20-F29 Group Covers Several Different Diagnoses
F20-F29 ICD-10-CM Codes Schizophrenia, schizotypal disorder, delusional disorders, schizoaffective disorders, and some other non-mood psychotic disorders These diagnoses are within this range in the FY2027 code materials from CMS.
That gives practices a useful starting point, but the range itself is too broad to function as a single answer.
Some of the commonly reported codes are:
Always verify the complete code in the ICD-10-CM Browser and review the Index and Tabular List for the applicable fiscal year. CMS releases the current files for each fiscal year.
A Psychosis Diagnosis Starts With the Clinical Picture
A patient may report hearing voices. Another may believe someone is following them. Someone else may have markedly disorganized speech.
The findings are clinically significant, therefore they do not instantly diagnose schizophrenia or the F29 code. The provider needs to identify which condition can define the presentation.
That distinction is particularly essential in cases where there are multiple diagnoses that could fairly be evaluated.
For example, psychotic symptoms occurring during a documented manic episode may point toward a bipolar diagnosis with psychotic features. Symptoms caused by a psychoactive substance follow a different coding path. Psychosis attributed to a known physiological condition is also handled separately.
So, when reviewing the record, the question should not simply be:
Where does the word psychosis appear?
A better question is:
What diagnosis did the provider establish, and what does the rest of the record support?
Schizophrenia Has Its Own Coding Branch
The F20 category contains multiple schizophrenia diagnoses.
F20.9 (schizophrenia, unspecified) is an example the other F20 codes describe more specific diagnoses. These include paranoid, disorganized, catatonic, undifferentiated, residual, schizophreniform, and other types.
That difference should come from the provider’s documentation. If the assessment establishes a particular form of schizophrenia, the note should identify it. If the provider has not established a more specific form, the documentation should not suggest otherwise simply because certain symptoms are present.
A coder should not have to reconstruct a schizophrenia diagnosis from several pages of mental-status findings when the provider can state the diagnosis directly.
F29 Has a Specific Meaning
F29 is frequently searched as “psychosis ICD-10,” but its full description is more specific:
- Unspecified psychosis not due to a substance or known physiological condition.
- F29 is not a universal code for hallucinations.
- It is not automatically the correct choice whenever the note contains the word “psychosis.”
- And it does not describe psychosis that the provider has determined is caused by a substance or known physiological condition.
When the clinical assessment remains at an unspecified psychosis diagnosis and the documented circumstances fit F29, the code may be appropriate. If the provider establishes a different underlying disorder, that diagnosis should guide the coding instead.
Psychosis vs. F29: They Are Not Always the Same
Psychotic symptoms do not automatically mean F29 is the right code. The diagnosis and documented cause still matter.
The takeaway is simple: F29 is not a catch-all code for “psychosis.” It applies when the provider documents unspecified psychosis that is not due to a substance or known physiological condition.
The Underlying Cause Can Move the Diagnosis Elsewhere
Psychosis does not exist only within the F20-F29 family.
This is one of the areas where a symptom-based approach can lead the coding review in the wrong direction.
Mental disorders due to known physiological conditions are included in the ICD-10-CM range of F01-F09.
For example, the FY2027 classification is:
- F06.0 – Psychotic disorder with hallucinations due to known physiological condition
- F06.2 — Psychotic disorder with delusions, due to known physiological condition
The diagnosis should be consistent with the provider’s documented clinical judgment of the relationship between the physiologic condition and the psychiatric presentation.
The presence of a neurological or other medical diagnosis in the same chart does not, in itself, establish causation of the psychosis.
Substance-Induced Psychotic Disorders
F10-F19 Mental and behavioral disorders due to psychoactive substance use Grouped by substance.
The specific code may differ depending on whether the patient has a substance use disorder and whether the provider notes a substance-induced psychotic disorder with symptoms such as hallucinations or delusions.
Thus, recent substance use should not be dismissed as a side note when the provider believes it explains the psychiatric presentation.
Bipolar Disorder Can Include Psychotic Features
Another situation that deserves careful attention is bipolar disorder.
Psychosis can occur during a severe manic or depressive episode. That does not automatically turn the patient’s diagnosis into schizophrenia.
The FY2027 ICD-10-CM classification includes bipolar diagnoses with psychotic features, including:
Severe Bipolar Disorder With Psychotic Features
Common ICD-10-CM codes based on the documented current episode
| Code | Diagnosis |
|---|---|
| F31.2 | Bipolar disorder, current episode manic, severe, with psychotic features |
| F31.5 | Bipolar disorder, current episode depressed, severe, with psychotic features |
| F31.64 | Bipolar disorder, current episode mixed, severe, with psychotic features |
There are also manic-episode codes outside F31. For example, F30.2 identifies a manic episode, severe with psychotic symptoms.
The clinical relationship matters here.
“Patient has delusions” describes a finding.
“Bipolar disorder, current manic episode, severe with psychotic features” communicates the diagnostic picture that the ICD-10-CM code is designed to represent.
The Same Symptom Can Lead to Different Diagnoses
The documented clinical diagnosis determines the coding direction.
PATIENT A
Schizophrenia
Provider diagnoses schizophrenia and documents persistent auditory hallucinations.
PATIENT B
Severe Manic Episode
Provider documents a severe manic episode with psychotic symptoms.
PATIENT C
Substance-Induced Psychosis
Provider determines psychosis is induced by a psychoactive substance.
Key Point: The same symptom can occur in different conditions, so coding follows the documented clinical diagnosis and cause.
All three patients may have reported hearing voices, the symptoms they describe might be similar but the diagnoses are not. That is why searching for a code based only on the most noticeable symptom can produce the wrong result.
Diagnosis vs. Symptom: A Small Documentation Difference Can Matter
A symptom tells you what the patient is experiencing. The assessment should make clear what the provider believes is causing or explaining those symptoms.
Compare the difference:
What Should Be in the Assessment?
A psychosis assessment does not have to be lengthy. It just needs to show what the provider believes is happening and what is being treated.
A clear assessment should cover:
- Diagnosis: What condition is being treated?
- Current status: Is it active, in remission, recurrent, or still being evaluated?
- Psychotic symptoms: Are hallucinations, delusions, paranoia, or other symptoms present?
- Clinical relationship: Are the psychotic symptoms part of a mood disorder or another condition?
- Cause: Is there a documented substance-related or physiological cause?
- Certainty: Is the diagnosis established or still unspecified?
- Plan: Does the treatment plan match the documented assessment?
The point is not to write the note around an ICD-10 code. It is to make the clinical picture clear enough that the appropriate code can follow from the provider’s assessment.
Documentation That Gives Coding a Clear Starting Point
A focused clinical assessment can provide the details needed to support diagnosis coding.
✓Psychiatric diagnosis being treated
✓Significant psychotic symptoms present
✓Psychotic features linked to a mood disorder
✓Whether a substance is believed to be responsible
✓Known physiological condition involved
✓Established diagnosis or unspecified status
Remember: The level of documentation needed varies with the clinical situation.
The key is that the documentation should reflect the provider’s actual clinical conclusion rather than leaving the diagnosis buried between symptom descriptions.
A Simple Decision Path for the Provider
When psychosis appears in an encounter, the following sequence can help keep the diagnosis anchored to the clinical assessment.
Start with the diagnosis.
What condition is the provider treating?
Then look at the context.
Are the psychotic symptoms part of schizophrenia, schizoaffective disorder, a brief psychotic disorder, or another primary psychotic disorder?
Check the mood history.
If bipolar disorder or another mood disorder is present, are the psychotic features connected to the current episode?
Look for an identified cause.
Did the provider establish a relationship to substance use, medication, or a physiological condition?
Consider diagnostic certainty.
If the evaluation does not support a more specific diagnosis, does the assessment appropriately reflect that?
Finally, compare the claim with the assessment.
The selected code should represent the diagnosis documented by the provider.
This approach is more useful than starting with a code book and working backward from a symptom.
Coding Errors Often Start Before the Coding Desk
A coding problem is sometimes really a documentation problem.
For example, a note might contain detailed descriptions of hallucinations and paranoia but never state the provider’s diagnostic impression.
Another record may list bipolar disorder and psychosis without explaining their relationship.
A third may mention recent drug use but never state whether the provider considers the psychotic episode substance-induced.
Each situation leaves room for interpretation.
That can lead to a coding query, delayed claim submission, additional review, or an incorrect diagnosis being carried into subsequent encounters. For practices seeing repeated claim issues, denial management can also help identify recurring billing and coding problems.
A few patterns deserve particular attention
Using F29 as a default
F29 has a defined clinical description. It should not become the automatic answer whenever a patient presents with psychosis.
Building schizophrenia from symptoms
Hallucinations, delusions, and disorganized thinking can support several different diagnoses. They do not independently establish schizophrenia.
Missing psychotic features in a mood disorder
If the provider documents a manic or depressive episode with psychotic features, the relevant mood-disorder code should be considered.
Ignoring the documented cause
Psychosis associated with a substance or physiological condition may require a different classification.
Leaving the diagnosis vague
If the provider has reached a clinical conclusion, stating it directly can eliminate unnecessary guesswork later.
A Better Claim Review Starts With the Assessment
For practices that routinely handle behavioral health claims, reviewing psychotic-disorder diagnoses does not have to mean reading the entire chart with the codebook open from the first page.
Start with the provider’s assessment.
Then verify that the history and mental-status findings support what was documented.
Next, look for anything that changes the coding direction—particularly mood disorders, substance use, or a known physiological cause.
Only after that should the selected ICD-10-CM code be checked.
This sequence keeps the clinical decision in the right place: with the provider’s documented diagnosis.
BEHAVIORAL HEALTH BILLING
Is Your Documentation Creating Coding Questions?
Clear documentation helps connect the provider’s clinical assessment with the diagnosis reported on the claim. Tennessee Billing can help identify billing and coding issues that may be creating unnecessary claim challenges.
Medical Billing • Coding Support • RCM Services
Why Accurate Psychotic-Disorder Coding Matters to the Practice
A diagnosis on a claim becomes part of a larger clinical and administrative record.
If the diagnosis is carried forward incorrectly, later clinicians may see an inaccurate problem list. A payer may request clarification. The practice may have to revisit documentation that should have been clear during the original encounter.
The recurring coding questions may also highlight a larger problem.
If, however, the same diagnosis leads to several requests for clarification, it may be worth looking at the documentation practices of the practice rather than treating each request as a one-off.
The Code Set Changes With the Fiscal Year
ICD-10-CM is not a permanent list.
CMS and CDC provide updated diagnosis files on an annual basis. The code set used is based on the date of service. The ICD-10-CM FY2027 release is effective for services provided from October 1, 2026 through September 30, 2027.
That makes the publication date of an online coding article relevant.
A code reference that was accurate several years ago should not automatically be treated as current. Practices should verify codes against the official ICD-10-CM files and guidelines for the applicable year.
CMS also emphasizes that complete and consistent documentation is necessary for accurate coding and that the entire record should be reviewed when determining the diagnoses to report.
Frequently Asked Questions
What are the ICD-10 codes for psychotic disorders?
F20-F29: Schizophrenia, Schizotypal and Delusional Disorders, Brief Psychotic Disorder and Schizoaffective Disorder. The specific code will depend on the diagnosis the provider gives you.
What is F29 ICD-10-CM?
F29 Psychotic disorder NOS due to a substance or known physiological condition. This is not a code that you can use for any patient that has hallucinations or other psychotic symptoms.
What is the ICD 10 CM code for schizophrenia?
Schizophrenia (within F20), the precise code is determined by the diagnosis given, such as F20.9, which means schizophrenia, unspecified.
Schizoaffective disorder Codes 295.70 to 295.79.
The schizoaffective disorders are coded as F25. There are different codes for the different types of schizoaffective disorders that have been classified . These include the bipolar type and the depressive type .
Does bipolar disorder have psychotic symptoms?
Yes. ICD-10-CM includes bipolar diagnoses that specify psychotic features. The correct code is based on the documented episode and its characteristics.
Should hearing voices automatically lead to the patient being coded F29?
No. Hearing voices is a symptom. The diagnosis of the provider and the clinical context as documented determine the selection of the appropriate ICD-10-CM category.
Final Thoughts
Psychotic symptoms are often the most obvious part of the encounter but not necessarily the diagnosis.
When the record describes the condition being treated and how the psychotic symptoms fit into that condition the coding decision is much clearer.
For one patient, that may be schizophrenia. For another, it may be schizoaffective disorder, bipolar disorder with psychotic features, substance-induced psychosis, or a disorder associated with a physiological condition.
