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v1.0.0
ICD-10 Guide
DiagnosesSleep Study

Sleep Study

ICD-10 Coding for Sleep Study(G47.33)

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

Diagnosis Overview

What is Sleep Study?
Essential facts and insights about Sleep Study

Key Clinical Considerations:

  • Excessive daytime sleepiness
  • Loud snoring or observed apneas
  • Restless legs syndrome

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history and symptom description
  • Results of polysomnography or home sleep apnea testing
  • Assessment of comorbid conditions

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for differentiating between obstructive and central sleep apnea.
  • Common errors include misclassifying the type of sleep apnea.

Code Exclusions

Important Exclusions

  • Primary insomnia
  • Circadian rhythm sleep disorders

Related ICD-10 Codes

Primary Codes
G47.33
Obstructive sleep apnea (OSA)
G47.30
Sleep apnea, unspecified
G47.31
Central sleep apnea
Ancillary Codes
R06.81
Differential Codes
G47.31

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Pulmonology

Specialty Applications

  • Adults with suspected sleep disorders
  • Sleep clinics and pulmonology practices

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

What are the documentation requirements?

Include patient history, sleep study results, and any comorbidities.

What are the billing considerations?

Ensure correct coding based on the type of sleep apnea and associated conditions.