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ICD-10 Guide
DiagnosesPseudoseizure

Pseudoseizure

ICD-10 Coding for Pseudoseizure(F44.5, R56.9)

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

Diagnosis Overview

What is Pseudoseizure?
Essential facts and insights about Pseudoseizure

Key Clinical Considerations:

  • Episodes resembling seizures without an organic cause
  • Psychogenic non-epileptic seizures (PNES) identified through video EEG monitoring
  • Inconsistent physical findings during episodes

Clinical Information

Clinical Criteria & Documentation Requirements

  • Detailed description of seizure episodes and triggers
  • Use of terms like 'psychogenic non-epileptic seizures' or 'pseudoseizures'
  • Examples include patient history, episode descriptions, and response to treatment

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines emphasize distinguishing between epileptic and non-epileptic seizures.
  • Common errors include misclassifying pseudoseizures as epileptic seizures.

Code Exclusions

Important Exclusions

  • Epileptic seizures
  • Other seizure disorders with identifiable organic causes

Related ICD-10 Codes

Primary Codes
G40.809
Other and unspecified epilepsy and recurrent seizures
F44.5
Dissociative seizures
Ancillary Codes
F45.8
Z91.41
Differential Codes
G40.909
F44.5
F44.5
when psychological etiology is confirmed.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Neurology

Specialty Applications

  • Patients with a history of seizures but normal EEG findings
  • Clinical settings including neurology clinics and emergency departments

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

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

Documentation requirements?

Include detailed patient history, episode descriptions, and any psychological evaluations.

Billing considerations?

Ensure accurate coding to reflect the nature of the seizures and any psychological assessments.