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v1.0.0
ICD-10 Guide
DiagnosesAcute Psychosis

Acute Psychosis

ICD-10 Coding for Acute Psychosis(F23.2, F29)

PRIMARY SPECIALTYPsychiatry
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Acute Psychosis?
Essential facts and insights about Acute Psychosis

Key Clinical Considerations:

  • Presence of delusions, hallucinations, disorganized thinking, or severe mood disturbances lasting less than one month.
  • No identifiable medical condition or substance use that could explain the symptoms.
  • Symptoms cause significant impairment in social or occupational functioning.
  • Physical examination may reveal signs of agitation or psychomotor retardation.
  • Severity is assessed based on the intensity and duration of psychotic symptoms.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Comprehensive documentation of the patient's psychiatric history and current symptoms.
  • Use of specific terminology such as 'acute psychosis' or 'psychotic episode' in the medical record.
  • Examples include detailed descriptions of hallucinations or delusions observed during the evaluation.
  • Documentation must support medical necessity for treatment and any interventions provided.
  • Quality measures may include assessments of symptom severity and functional status.

Coding Guidelines

Usage Guidelines & Examples

  • Use F23.2 for acute psychotic disorder with delusions and F29 for unspecified psychosis when specific criteria are not met.
  • Do not use these codes for chronic psychotic disorders or psychosis due to a medical condition.
  • F20 (Schizophrenia) and F22 (Persistent delusional disorders) are related but denote different chronic conditions.
  • Common errors include misclassifying acute episodes as chronic; ensure symptom duration is accurately documented.
  • In complex cases, consider the full clinical picture and any co-occurring mental health disorders.

Code Exclusions

Important Exclusions

  • Excludes psychotic disorders due to a medical condition (e.g., brain injury, infection).
  • Alternative codes for excluded conditions include F06.2 (Psychotic disorder due to another medical condition).
  • Conditions are excluded to ensure accurate diagnosis and treatment planning.
  • Common mistakes include misdiagnosing substance-induced psychosis as acute psychosis.
  • Related but distinct conditions include bipolar disorder with psychotic features and major depressive disorder with psychotic features.

Related ICD-10 Codes

Primary Codes
F23.2
Acute psychotic disorder with delusions
F29
Unspecified psychosis
Ancillary Codes
F06.2
Differential Codes
F29
F29
when the etiology is unclear or documentation lacks specificity.
F23.2
F23.2
when symptoms are acute and resolve within 1 month.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Psychiatry

Specialty Applications

  • Applies to individuals experiencing acute episodes of psychosis, often triggered by stress or substance use.
  • Patient populations may include young adults and those with a history of mental health issues.
  • Clinical settings include inpatient psychiatric units, emergency departments, and outpatient mental health clinics.
  • Specialty-specific applications are primarily in psychiatry and emergency medicine.
  • Treatment contexts often involve crisis intervention and stabilization.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Template 1

Template: 'Patient diagnosed with acute psychosis based on clinical findings of hallucinations and disorganized thinking.'

Template 2

Template: 'Clinical presentation consistent with acute psychosis including auditory hallucinations and paranoid delusions.'

Template 3

Template: 'Diagnostic criteria for acute psychosis met as evidenced by the presence of delusions and significant functional impairment.'

Template 4

Template: 'Treatment plan initiated for acute psychosis with antipsychotic medication and supportive therapy.'

Template 5

Template: 'Follow-up care for acute psychosis including monitoring of medication side effects and symptom resolution.'

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What documentation is required for this diagnosis?

Detailed documentation should include patient history, symptom descriptions, and any relevant diagnostic tests.

How does this differ from similar diagnoses?

Acute psychosis is characterized by a short duration of symptoms, unlike chronic conditions such as schizophrenia.

What are common billing considerations?

Ensure that the diagnosis is supported by clinical documentation to optimize reimbursement.

What procedures are typically associated?

Commonly associated procedures include psychiatric evaluations and crisis intervention services.

Are there any quality reporting implications?

Quality measures may include tracking symptom improvement and functional outcomes post-treatment.