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v1.0.0
ICD-10 Guide
ICD-10 CodesA37

A37

Whooping cough due to Bordetella pertussis

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

Code Description

ICD-10 A37 is a billable code used to indicate a diagnosis of whooping cough due to bordetella pertussis.

Key Diagnostic Point:

Whooping cough, or pertussis, is a highly contagious respiratory disease caused by the bacterium Bordetella pertussis. It is characterized by severe coughing fits that can lead to difficulty breathing, vomiting, and exhaustion. The disease is particularly dangerous for infants and young children, who may experience complications such as pneumonia, seizures, and in severe cases, death. The cough typically has a 'whooping' sound, especially in children, and can last for weeks or even months. Diagnosis is primarily clinical, supported by laboratory tests such as PCR or culture of nasopharyngeal secretions. Vaccination with the DTaP (diphtheria, tetanus, and pertussis) vaccine is the most effective prevention method. Treatment usually involves antibiotics, which can help reduce the severity of symptoms and prevent transmission if administered early in the course of the disease. However, the effectiveness of antibiotics diminishes once the cough has progressed significantly. Resistance patterns to macrolide antibiotics, such as azithromycin, have been observed, necessitating careful consideration of treatment options.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between pertussis and other respiratory infections
  • Understanding the timing of antibiotic treatment
  • Recognizing the importance of vaccination history
  • Identifying complications that may arise in different age groups

Audit Risk Factors

  • Inadequate documentation of laboratory confirmation
  • Failure to note vaccination status
  • Misclassification of cough type or duration
  • Omission of complications in documentation

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed history of cough, vaccination status, and any complications.

Common Clinical Scenarios

Infants presenting with severe cough, older children with prolonged cough, and outbreaks in schools.

Billing Considerations

Special attention to the age of the patient and vaccination history is crucial for accurate coding.

Infectious Disease

Documentation Requirements

Comprehensive lab results, treatment plans, and follow-up care.

Common Clinical Scenarios

Patients with atypical presentations or complications from pertussis.

Billing Considerations

Documentation should include antibiotic resistance patterns and alternative treatment plans.

Coding Guidelines

Inclusion Criteria

Use A37 When
  • According to ICD
  • 10 guidelines, A37 should be used when the diagnosis is confirmed by laboratory testing or clinical presentation
  • It is important to document the onset of symptoms and any complications that arise

Exclusion Criteria

Do NOT use A37 When
No specific exclusions found.

Related Codes

Child Codes

12 codes
A37.0
Whooping cough due to Bordetella pertussis
A37.00
Whooping cough due to Bordetella pertussis without pneumonia
A37.01
Whooping cough due to Bordetella pertussis with pneumonia
A37.1
Whooping cough due to Bordetella pertussis
A37.10
Whooping cough due to Bordetella parapertussis without pneumonia
A37.11
Whooping cough due to Bordetella parapertussis with pneumonia
A37.8
Whooping cough due to other Bordetella species
A37.80
Whooping cough due to other Bordetella species without pneumonia
A37.81
Whooping cough due to other Bordetella species with pneumonia
A37.9
Whooping cough, unspecified
A37.90
Whooping cough, unspecified species without pneumonia
A37.91
Whooping cough, unspecified species with pneumonia

Related CPT Codes

99213CPT Code

Established patient office visit, Level 3

Clinical Scenario

Used for follow-up visits after diagnosis of whooping cough.

Documentation Requirements

Document history of present illness, review of systems, and treatment plan.

Specialty Considerations

Pediatricians should emphasize vaccination history and any complications.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of whooping cough, improving data accuracy and facilitating better tracking of outbreaks and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of whooping cough, improving data accuracy and facilitating better tracking of outbreaks and treatment outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of whooping cough, improving data accuracy and facilitating better tracking of outbreaks and treatment outcomes.

Resources

Clinical References

  • •
    CDC Pertussis Information

Coding & Billing References

  • •
    CDC Pertussis Information

Frequently Asked Questions

What is the primary treatment for whooping cough?

The primary treatment for whooping cough is antibiotics, such as azithromycin or clarithromycin, especially if administered early in the course of the illness.