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ICD-10 Guide
ICD-10 CodesF51.5

F51.5

Billable

Nightmare disorder

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

Code Description

ICD-10 F51.5 is a billable code used to indicate a diagnosis of nightmare disorder.

Key Diagnostic Point:

Nightmare disorder is characterized by recurrent, distressing dreams that typically involve threats to the safety or well-being of the individual or others. These nightmares often lead to awakening from sleep, accompanied by significant anxiety or distress. The condition can result in sleep disturbances, daytime fatigue, and impaired functioning. Nightmares are more prevalent in children but can persist into adulthood, often exacerbated by stress, trauma, or underlying mental health conditions. Diagnosis is based on the frequency and impact of the nightmares on the individual's sleep quality and daily life. Treatment may include psychotherapy, particularly cognitive-behavioral therapy, and in some cases, medication may be prescribed to alleviate symptoms. Understanding the psychological and physiological factors contributing to nightmare disorder is crucial for effective management and treatment.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between primary nightmare disorder and nightmares due to other sleep disorders.
  • Understanding the impact of comorbid conditions such as PTSD or anxiety disorders.
  • Documenting the frequency and severity of nightmares accurately.
  • Navigating treatment options and their documentation requirements.

Audit Risk Factors

  • Inadequate documentation of the frequency and impact of nightmares.
  • Failure to document comorbid conditions that may influence treatment.
  • Misclassification of nightmares as a symptom of other disorders.
  • Lack of clear treatment plans or follow-up documentation.

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Detailed patient history, including trauma history, sleep patterns, and treatment response.

Common Clinical Scenarios

Patients presenting with recurrent nightmares following trauma or significant stress.

Billing Considerations

Consideration of comorbid mental health disorders and their impact on treatment.

Sleep Medicine

Documentation Requirements

Sleep studies, detailed sleep logs, and assessments of sleep quality.

Common Clinical Scenarios

Patients undergoing evaluation for sleep disorders with reported nightmares.

Billing Considerations

Integration of polysomnography results with clinical findings.

Coding Guidelines

Inclusion Criteria

Use F51.5 When
  • According to ICD
  • 10 guidelines, F51
  • 5 should be used when nightmares are recurrent and cause significant distress or impairment
  • It is important to document the frequency of nightmares and their impact on the patient's life

Exclusion Criteria

Do NOT use F51.5 When
  • Exclusion criteria include nightmares that are solely due to substance use or other medical conditions

Related ICD-10 Codes

Related CPT Codes

96150CPT Code

Health and behavior assessment

Clinical Scenario

Used when assessing the psychological impact of nightmares on a patient.

Documentation Requirements

Document the assessment findings and treatment recommendations.

Specialty Considerations

Psychiatrists may use this code in conjunction with F51.5 for comprehensive care.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of nightmare disorder, improving the ability to track and treat this condition effectively. It emphasizes the need for detailed documentation of symptoms and their impact on daily life.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of nightmare disorder, improving the ability to track and treat this condition effectively. It emphasizes the need for detailed documentation of symptoms and their impact on daily life.

Reimbursement & Billing Impact

impact on functioning. Treatment plans should be clearly outlined and updated regularly.

Resources

Clinical References

  • •
    American Academy of Sleep Medicine

Coding & Billing References

  • •
    American Academy of Sleep Medicine

Frequently Asked Questions

What are the primary symptoms of nightmare disorder?

The primary symptoms include recurrent distressing dreams that lead to awakening, often accompanied by anxiety or fear, and significant distress or impairment in social, occupational, or other important areas of functioning.