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ICD-10 Guide
ICD-10 CodesG47.27

G47.27

Billable

Circadian rhythm sleep disorder in conditions classified elsewhere

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 G47.27 is a billable code used to indicate a diagnosis of circadian rhythm sleep disorder in conditions classified elsewhere.

Key Diagnostic Point:

Circadian rhythm sleep disorder in conditions classified elsewhere refers to a disruption in the body's internal clock that regulates sleep-wake cycles, often due to underlying medical conditions. This disorder can manifest in various forms, including delayed sleep phase disorder, advanced sleep phase disorder, and irregular sleep-wake rhythm. Patients may experience excessive daytime sleepiness, insomnia, or a combination of both, which can significantly impact their quality of life. The disorder is often associated with conditions such as neurodegenerative diseases, mental health disorders, and certain medical treatments. Diagnosis typically involves a thorough clinical evaluation, including sleep history, sleep diaries, and possibly polysomnography or actigraphy to assess sleep patterns. Treatment may include behavioral interventions, light therapy, and pharmacological options aimed at resetting the circadian clock. Accurate coding is essential for proper management and reimbursement, as it reflects the complexity of the patient's condition and the need for tailored therapeutic approaches.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of circadian rhythm physiology
  • Differentiation from other sleep disorders
  • Documentation of underlying conditions
  • Potential for overlapping symptoms with other sleep disorders

Audit Risk Factors

  • Inadequate documentation of underlying conditions
  • Failure to link symptoms to the circadian rhythm disorder
  • Misclassification of the disorder type
  • Lack of supporting sleep study results

Specialty Focus

Medical Specialties

Sleep Medicine

Documentation Requirements

Detailed sleep history, results of sleep studies, and treatment plans.

Common Clinical Scenarios

Patients presenting with insomnia or excessive daytime sleepiness linked to circadian rhythm disruptions.

Billing Considerations

Ensure that all relevant sleep study data is included to support the diagnosis.

Neurology

Documentation Requirements

Comprehensive neurological evaluation, including history of neurological disorders that may affect sleep.

Common Clinical Scenarios

Patients with neurodegenerative diseases presenting with sleep disturbances.

Billing Considerations

Document any neurological conditions that may contribute to circadian rhythm disorders.

Coding Guidelines

Inclusion Criteria

Use G47.27 When
  • According to ICD
  • 10 guidelines, G47
  • 27 should be used when the circadian rhythm sleep disorder is secondary to another condition
  • Coders must ensure that the primary condition is documented and linked appropriately to the sleep disorder

Exclusion Criteria

Do NOT use G47.27 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

95810CPT Code

Polysomnography, sleep study

Clinical Scenario

Used to evaluate sleep disorders including circadian rhythm disruptions.

Documentation Requirements

Complete sleep study report and interpretation.

Specialty Considerations

Ensure that the sleep study is linked to the diagnosis of G47.27.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of sleep disorders, including G47.27, which helps in capturing the complexity of circadian rhythm disruptions related to other medical conditions. This specificity aids in better patient management and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of sleep disorders, including G47.27, which helps in capturing the complexity of circadian rhythm disruptions related to other medical conditions. This specificity aids in better patient management and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    American Academy of Sleep Medicine

Coding & Billing References

  • •
    American Academy of Sleep Medicine

Frequently Asked Questions

What is the primary use of G47.27?

G47.27 is used to code for circadian rhythm sleep disorders that are secondary to other medical conditions, ensuring that the underlying cause is documented.