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v1.0.0
ICD-10 Guide
ICD-10 CodesQ42.2

Q42.2

Billable

Congenital absence, atresia and stenosis of anus with fistula

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

Code Description

ICD-10 Q42.2 is a billable code used to indicate a diagnosis of congenital absence, atresia and stenosis of anus with fistula.

Key Diagnostic Point:

Congenital absence, atresia, and stenosis of the anus with fistula is a serious congenital malformation of the digestive system that presents at birth. This condition is characterized by the absence or abnormal narrowing of the anal opening, often accompanied by a fistula connecting the rectum to the urinary tract or vagina. The condition can lead to significant complications, including bowel obstruction, infection, and failure to thrive if not promptly diagnosed and treated. Diagnosis typically involves physical examination and imaging studies to assess the anatomy of the gastrointestinal tract. Surgical intervention is often required to create a functional anus and repair any associated fistulas. The condition is part of a spectrum of anorectal malformations, which may also include conditions like esophageal atresia, Hirschsprung disease, and imperforate anus. Early recognition and multidisciplinary management are crucial for optimal outcomes in affected infants.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and associated anomalies
  • Need for detailed surgical documentation
  • Potential for multiple surgical interventions
  • Differentiation from similar congenital conditions

Audit Risk Factors

  • Inadequate documentation of associated anomalies
  • Failure to document surgical procedures performed
  • Misclassification of the type of fistula
  • Inconsistent use of codes for related congenital conditions

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation must include detailed birth history, physical examination findings, and any imaging studies performed. Documentation of growth parameters and feeding difficulties is also essential.

Common Clinical Scenarios

Common scenarios include newborns presenting with failure to pass meconium, abdominal distension, or signs of infection. Surgical consultations are often required.

Billing Considerations

Coders should be aware of the need for precise documentation of the surgical approach and any complications that arise during treatment.

Genetics

Documentation Requirements

Genetic documentation should include family history, genetic testing results, and any syndromic associations with congenital malformations.

Common Clinical Scenarios

Scenarios may involve genetic counseling for families with a history of congenital anomalies or syndromes associated with anorectal malformations.

Billing Considerations

Consideration of chromosomal abnormalities that may be associated with congenital conditions is crucial for accurate coding.

Coding Guidelines

Inclusion Criteria

Use Q42.2 When
  • Official coding guidelines for congenital conditions emphasize the importance of accurate documentation of the condition's severity, associated anomalies, and any surgical interventions performed
  • Coders should refer to the ICD
  • CM guidelines for congenital malformations for specific coding instructions

Exclusion Criteria

Do NOT use Q42.2 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

44600CPT Code

Anorectal malformation repair

Clinical Scenario

Used during surgical correction of congenital absence or stenosis of the anus.

Documentation Requirements

Detailed operative notes and postoperative care documentation are required.

Specialty Considerations

Pediatric surgeons must provide comprehensive documentation to support the complexity of the procedure.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the accuracy of data collection and reimbursement processes. Q42.2 provides a clearer picture of the patient's condition, facilitating better clinical management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the accuracy of data collection and reimbursement processes. Q42.2 provides a clearer picture of the patient's condition, facilitating better clinical management.

Reimbursement & Billing Impact

reimbursement processes. Q42.2 provides a clearer picture of the patient's condition, facilitating better clinical management.

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 significance of coding Q42.2 accurately?

Accurate coding of Q42.2 is crucial for ensuring appropriate treatment and follow-up care for patients with congenital anorectal malformations. It also impacts reimbursement and data collection for congenital conditions.