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ICD-10 Guide
ICD-10 CodesA37.00

A37.00

Whooping cough due to Bordetella pertussis without pneumonia

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

Code Description

ICD-10 A37.00 is a billable code used to indicate a diagnosis of whooping cough due to bordetella pertussis without pneumonia.

Key Diagnostic Point:

Whooping cough, or pertussis, is a highly contagious bacterial infection caused by Bordetella pertussis. It is characterized by severe coughing fits that can lead to a 'whooping' sound during inhalation. The disease primarily affects infants and young children, but can also occur in adolescents and adults. The infection is transmitted through respiratory droplets from an infected person. Symptoms typically begin with mild respiratory symptoms, including a runny nose, sneezing, and low-grade fever, which can progress to intense coughing fits. In cases coded as A37.00, the patient does not exhibit pneumonia, which is a common complication of pertussis. Diagnosis is often confirmed through clinical evaluation and laboratory tests, including PCR or culture of nasopharyngeal secretions. Treatment usually involves antibiotics such as azithromycin or erythromycin, which are most effective when administered early in the course of the illness. Vaccination with the DTaP (diphtheria, tetanus, and pertussis) vaccine is crucial for prevention, especially in infants. Understanding the nuances of this condition is essential for accurate coding and effective patient management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between whooping cough with and without pneumonia
  • Understanding the clinical presentation and progression of the disease
  • Knowledge of vaccination history and its impact on coding
  • Awareness of potential complications and their coding implications

Audit Risk Factors

  • Inadequate documentation of symptoms leading to misclassification
  • Failure to document vaccination history
  • Incorrect coding of complications or associated conditions
  • Lack of clarity in laboratory results supporting the diagnosis

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed history of symptoms, vaccination status, and treatment response.

Common Clinical Scenarios

Infants presenting with severe cough, adolescents with persistent cough, and adults with atypical presentations.

Billing Considerations

Ensure documentation reflects the absence of pneumonia and any complications.

Infectious Disease

Documentation Requirements

Comprehensive lab results, treatment regimens, and follow-up care notes.

Common Clinical Scenarios

Patients with recurrent cough post-infection and those requiring hospitalization.

Billing Considerations

Focus on antibiotic resistance patterns and treatment efficacy.

Coding Guidelines

Inclusion Criteria

Use A37.00 When
  • According to ICD
  • 10 guidelines, A37
  • 00 should be used when the diagnosis of whooping cough is confirmed without pneumonia
  • Documentation must support the diagnosis, including symptomatology and laboratory findings

Exclusion Criteria

Do NOT use A37.00 When
  • Exclusion criteria include cases where pneumonia is present

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.

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, enabling better tracking of cases and complications. A37.00 provides clarity in coding for cases without pneumonia, which was less distinct in ICD-9.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of whooping cough, enabling better tracking of cases and complications. A37.00 provides clarity in coding for cases without pneumonia, which was less distinct in ICD-9.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of whooping cough, enabling better tracking of cases and complications. A37.00 provides clarity in coding for cases without pneumonia, which was less distinct in ICD-9.

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 erythromycin, which are most effective when started early in the course of the illness.