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ICD-10 Guide
ICD-10 CodesA50.07

A50.07

Billable

Early mucocutaneous congenital syphilis

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

Code Description

ICD-10 A50.07 is a billable code used to indicate a diagnosis of early mucocutaneous congenital syphilis.

Key Diagnostic Point:

Early mucocutaneous congenital syphilis refers to the manifestation of syphilis in newborns that occurs when the infection is transmitted from an infected mother during pregnancy. This condition typically presents within the first two years of life and is characterized by mucocutaneous lesions, which may include rashes, mucosal lesions, and other systemic signs. The lesions can appear on the skin, mouth, and other mucous membranes, and may be accompanied by other symptoms such as fever, irritability, and failure to thrive. Early diagnosis and treatment are crucial to prevent long-term complications, including skeletal deformities and neurological issues. The diagnosis is confirmed through serological testing and clinical evaluation. Treatment usually involves the administration of penicillin, which is effective in eradicating the infection. Close monitoring and follow-up are essential to ensure the resolution of symptoms and to assess for any potential complications.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between congenital and acquired syphilis
  • Understanding the timing of symptom onset in relation to maternal infection
  • Navigating the nuances of mucocutaneous manifestations
  • Ensuring accurate documentation of maternal syphilis status

Audit Risk Factors

  • Inadequate documentation of maternal syphilis history
  • Failure to document specific mucocutaneous findings
  • Misclassification of congenital versus acquired syphilis
  • Lack of follow-up documentation post-treatment

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed clinical notes on the infant's symptoms, maternal history, and treatment response.

Common Clinical Scenarios

Infants presenting with rashes, mucosal lesions, or systemic symptoms shortly after birth.

Billing Considerations

Documentation must clearly indicate the timing of maternal infection and any treatment provided.

Obstetrics

Documentation Requirements

Comprehensive prenatal records, including syphilis screening results and treatment history.

Common Clinical Scenarios

Pregnant women with a history of syphilis or positive serology requiring monitoring and treatment.

Billing Considerations

Ensure that maternal treatment is documented to support the diagnosis of congenital syphilis.

Coding Guidelines

Inclusion Criteria

Use A50.07 When
  • According to ICD
  • 10 guidelines, A50
  • 07 should be used when the infant exhibits early mucocutaneous signs of congenital syphilis
  • It is essential to document the maternal syphilis status and any relevant clinical findings

Exclusion Criteria

Do NOT use A50.07 When
  • Exclusion criteria include cases where syphilis is acquired postnatally

Related ICD-10 Codes

Related CPT Codes

86592CPT Code

Syphilis serology test

Clinical Scenario

Used to confirm diagnosis of congenital syphilis in infants.

Documentation Requirements

Document the reason for testing and results.

Specialty Considerations

Pediatricians should ensure maternal history is included.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of congenital syphilis, improving the accuracy of data collection and treatment tracking.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital syphilis, improving the accuracy of data collection and treatment tracking.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    CDC Syphilis Guidelines

Coding & Billing References

  • •
    CDC Syphilis Guidelines

Frequently Asked Questions

What are the key symptoms of early mucocutaneous congenital syphilis?

Key symptoms include rashes, mucosal lesions, fever, irritability, and failure to thrive, typically presenting within the first two years of life.