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ICD-10 Guide
ICD-10 CodesQ23.8

Q23.8

Billable

Other congenital malformations of aortic and mitral valves

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

Code Description

ICD-10 Q23.8 is a billable code used to indicate a diagnosis of other congenital malformations of aortic and mitral valves.

Key Diagnostic Point:

Congenital malformations of the aortic and mitral valves can encompass a variety of structural abnormalities that affect the normal function of these critical components of the heart. These malformations may include conditions such as aortic stenosis, mitral valve prolapse, or other atypical formations that do not fit into more specific categories. These defects can lead to significant hemodynamic changes, resulting in symptoms such as heart murmurs, heart failure, or arrhythmias. The severity of these conditions can vary widely, with some patients requiring surgical intervention early in life, while others may be managed conservatively. Accurate diagnosis often involves echocardiography and may require additional imaging studies. Understanding the implications of these malformations is crucial for pediatric patients, as they may have associated syndromes or chromosomal abnormalities that necessitate a multidisciplinary approach to care.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of malformations
  • Need for precise documentation of valve structure and function
  • Potential for associated congenital heart defects
  • Differentiation from acquired heart conditions

Audit Risk Factors

  • Inadequate documentation of the specific malformation
  • Failure to report associated congenital conditions
  • Misclassification of congenital versus acquired defects
  • Lack of clarity in imaging reports

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation must include growth parameters, developmental milestones, and specific symptoms related to cardiac function.

Common Clinical Scenarios

Common scenarios include routine evaluations for murmurs, pre-operative assessments for valve repair, and follow-up care for patients with known congenital heart defects.

Billing Considerations

Considerations include the age of the patient, potential for growth-related changes in cardiac function, and the need for long-term follow-up.

Genetics

Documentation Requirements

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

Common Clinical Scenarios

Scenarios may involve genetic counseling for families with a history of congenital heart disease or syndromic presentations.

Billing Considerations

Considerations include the potential for chromosomal abnormalities that may be associated with congenital heart defects, necessitating a thorough genetic evaluation.

Coding Guidelines

Inclusion Criteria

Use Q23.8 When
  • Official coding guidelines for congenital conditions emphasize the need for specificity in documentation, including the type of malformation, associated conditions, and any interventions performed

Exclusion Criteria

Do NOT use Q23.8 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

93306CPT Code

Echocardiography, transthoracic, real-time with interpretation

Clinical Scenario

Used for initial evaluation of congenital heart defects.

Documentation Requirements

Echocardiogram report detailing findings related to valve structure and function.

Specialty Considerations

Pediatric cardiology may require additional imaging or follow-up studies.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding congenital heart defects, enabling better tracking of outcomes and resource allocation for affected patients.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding congenital heart defects, enabling better tracking of outcomes and resource allocation for affected patients.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for greater specificity in coding congenital heart defects, enabling better tracking of outcomes and resource allocation for affected patients.

Resources

Clinical References

  • •
    American Academy of Pediatrics - Congenital Heart Disease

Coding & Billing References

  • •
    American Academy of Pediatrics - Congenital Heart Disease

Frequently Asked Questions

What are the common congenital malformations associated with Q23.8?

Common malformations include aortic stenosis, mitral valve prolapse, and other atypical valve formations that do not fit into more specific categories. These conditions can vary in severity and may require different management strategies.