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ICD-10 Guide
ICD-10 CodesQ15.9

Q15.9

Billable

Congenital malformation of eye, unspecified

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

Code Description

ICD-10 Q15.9 is a billable code used to indicate a diagnosis of congenital malformation of eye, unspecified.

Key Diagnostic Point:

Congenital malformations of the eye encompass a range of structural anomalies that occur during fetal development. These malformations can include conditions such as anophthalmia (absence of one or both eyes), microphthalmia (abnormally small eyes), and other unspecified eye defects. The severity and implications of these conditions can vary widely, affecting visual acuity and overall ocular health. Anophthalmia and microphthalmia are often associated with other congenital syndromes and may require multidisciplinary management, including surgical interventions, visual rehabilitation, and genetic counseling. The unspecified nature of this code indicates that while a congenital malformation is present, the specific type has not been clearly defined or documented. Accurate coding is essential for appropriate treatment planning and resource allocation in pediatric care.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in documentation quality and specificity.
  • Potential overlap with other congenital eye conditions.
  • Need for comprehensive patient history to determine associated syndromes.
  • Challenges in distinguishing between congenital and acquired conditions.

Audit Risk Factors

  • Inadequate documentation of the specific eye malformation.
  • Failure to document associated syndromes or conditions.
  • Misclassification of congenital versus acquired conditions.
  • Lack of clarity in the clinical narrative regarding the severity of the malformation.

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation should include detailed descriptions of the malformation, associated symptoms, and any interventions performed. Growth and developmental assessments are also crucial.

Common Clinical Scenarios

Common scenarios include newborns presenting with eye abnormalities during routine examinations or referrals for visual impairment assessments.

Billing Considerations

Consideration must be given to the potential for associated systemic anomalies and the need for a multidisciplinary approach to care.

Genetics

Documentation Requirements

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

Common Clinical Scenarios

Scenarios may involve genetic counseling for families with a history of congenital eye malformations or syndromes that include ocular anomalies.

Billing Considerations

Genetic coders must be aware of the implications of chromosomal abnormalities that may accompany congenital eye defects.

Coding Guidelines

Inclusion Criteria

Use Q15.9 When
  • According to ICD
  • 10 coding guidelines, congenital malformations should be coded based on the specific anatomical site and type of malformation when known
  • If the specific malformation is not documented, Q15
  • 9 may be used, but coders should ensure that the documentation supports this choice

Exclusion Criteria

Do NOT use Q15.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

67904CPT Code

Repair of congenital eyelid malformation

Clinical Scenario

Used in conjunction with Q15.9 when surgical intervention is required.

Documentation Requirements

Documentation must include the specific malformation and surgical details.

Specialty Considerations

Ophthalmology specialists should provide detailed operative reports.

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 granularity of data collection and enhancing the ability to track outcomes and resource utilization.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the granularity of data collection and enhancing the ability to track outcomes and resource utilization.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    CDC Congenital Malformations

Coding & Billing References

  • •
    CDC Congenital Malformations

Frequently Asked Questions

What should I document to support the use of Q15.9?

To support the use of Q15.9, ensure that the clinical documentation clearly describes the congenital eye malformation, any associated conditions, and the treatment plan. Include details about the patient's history and any relevant imaging or genetic testing results.