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v1.0.0
ICD-10 Guide
ICD-10 CodesR05.4

R05.4

Cough syncope

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 R05.4 is a billable code used to indicate a diagnosis of cough syncope.

Key Diagnostic Point:

Cough syncope refers to a transient loss of consciousness that occurs due to a vigorous cough, often resulting in a brief episode of syncope. This phenomenon is typically associated with a sudden increase in intrathoracic pressure during coughing, which can lead to decreased venous return to the heart and subsequent cerebral hypoperfusion. Patients may present with a history of recurrent cough, often due to underlying respiratory conditions such as asthma, chronic obstructive pulmonary disease (COPD), or infections. The syncopal episode is usually brief, with patients regaining consciousness quickly after the cough subsides. It is important to differentiate cough syncope from other causes of syncope, as the management may differ based on the underlying etiology. Clinical evaluation may include a thorough history, physical examination, and possibly diagnostic tests such as chest X-rays or pulmonary function tests to identify any underlying respiratory issues.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating from other types of syncope
  • Identifying underlying respiratory conditions
  • Need for comprehensive patient history
  • Potential for multiple contributing factors

Audit Risk Factors

  • Inadequate documentation of the syncopal episode
  • Failure to document underlying respiratory conditions
  • Misclassification of cough syncope as other types of syncope
  • Lack of clarity in patient history

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed history of cough and syncopal episodes, including duration and frequency.

Common Clinical Scenarios

Patients with chronic cough due to asthma or COPD presenting with syncope.

Billing Considerations

Consideration of comorbidities that may exacerbate cough or syncope.

Emergency Medicine

Documentation Requirements

Acute assessment of the patient’s vital signs and neurological status post-syncope.

Common Clinical Scenarios

Patients presenting to the ER after a syncopal episode triggered by coughing.

Billing Considerations

Rapid evaluation to rule out other causes of syncope, such as cardiac issues.

Coding Guidelines

Inclusion Criteria

Use R05.4 When
  • Follow ICD
  • CM guidelines for coding symptoms and signs, ensuring that the underlying cause of cough is documented if known

Exclusion Criteria

Do NOT use R05.4 When
No specific exclusions found.

Related CPT Codes

94010CPT Code

Spirometry

Clinical Scenario

Used to assess lung function in patients with chronic cough.

Documentation Requirements

Document indications for spirometry and results.

Specialty Considerations

Internal medicine may focus on chronic management, while emergency medicine may use it for acute assessment.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of cough-related conditions, improving the accuracy of diagnoses and treatment plans.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of cough-related conditions, improving the accuracy of diagnoses and treatment plans.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of cough-related conditions, improving the accuracy of diagnoses and treatment plans.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the primary cause of cough syncope?

Cough syncope is primarily caused by increased intrathoracic pressure during a cough, leading to decreased blood flow to the brain.

How can cough syncope be differentiated from other types of syncope?

Cough syncope is characterized by a clear temporal relationship between coughing and loss of consciousness, whereas other types may not have such a direct link.