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v1.0.0
ICD-10 Guide
DiagnosesShift Work Disorder

Shift Work Disorder

ICD-10 Coding for Shift Work Disorder(G47.26)

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

Diagnosis Overview

What is Shift Work Disorder?
Essential facts and insights about Shift Work Disorder

Key Clinical Considerations:

  • Insomnia or excessive sleepiness related to work schedule
  • Mood disturbances, fatigue, and decreased performance
  • Sleep logs or actigraphy showing irregular sleep patterns

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient's work schedule and sleep history
  • Symptoms duration and impact on daily functioning
  • Use of standardized sleep questionnaires

Coding Guidelines

Usage Guidelines & Examples

  • Use G47.21 for specific shift work disorder; G47.20 for unspecified cases.
  • Common errors include misclassifying as insomnia without documenting shift work.

Code Exclusions

Important Exclusions

  • Primary insomnia or other sleep disorders not related to work schedule
  • F51.9 - Sleep disorder, unspecified

Related ICD-10 Codes

Primary Codes
G47.20
Circadian Rhythm Sleep-Wake Disorders, Unspecified
G47.21
Circadian Rhythm Sleep-Wake Disorders due to Shift Work
Ancillary Codes
Z56.2
Differential Codes
G47.00
G47.10

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Occupational Medicine

Specialty Applications

  • Night shift workers, rotating shift workers
  • Occupational health clinics, sleep disorder centers

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?

Document the patient's work schedule, sleep patterns, and any related symptoms.

What are the billing considerations?

Ensure accurate coding based on the specific type of circadian rhythm disorder.