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v1.0.0
ICD-10 Guide
ICD-10 CodesQ75.4

Q75.4

Billable

Mandibulofacial dysostosis

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

Code Description

ICD-10 Q75.4 is a billable code used to indicate a diagnosis of mandibulofacial dysostosis.

Key Diagnostic Point:

Mandibulofacial dysostosis, also known as Treacher Collins syndrome, is a congenital condition characterized by the underdevelopment of facial bones, particularly the mandible and zygomatic bones. This condition results in distinctive facial features, including a flat facial profile, underdeveloped cheekbones, and a small jaw. Patients may also present with hearing loss due to malformations of the middle ear structures. The severity of the condition can vary widely among individuals, with some experiencing significant functional impairments while others may have only mild cosmetic concerns. Associated anomalies can include cleft palate, dental abnormalities, and ocular defects. The condition is typically inherited in an autosomal dominant pattern, with mutations in the TCOF1 gene being the most common cause. Diagnosis is primarily clinical, supported by imaging studies to assess the extent of craniofacial anomalies. Early intervention, including surgical correction and supportive therapies, is crucial for improving quality of life and functional outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and severity among patients
  • Need for comprehensive documentation of associated anomalies
  • Potential for multiple surgical interventions over time
  • Inheritance patterns and genetic counseling considerations

Audit Risk Factors

  • Inadequate documentation of associated congenital anomalies
  • Failure to capture the severity of the condition
  • Misclassification with other craniofacial syndromes
  • Lack of genetic testing documentation

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation should include growth parameters, developmental milestones, and any associated congenital anomalies. Detailed descriptions of surgical interventions and outcomes are also necessary.

Common Clinical Scenarios

Common scenarios include initial diagnosis at birth, referrals for surgical correction, and ongoing management of associated conditions such as hearing loss.

Billing Considerations

Coders should be aware of the need for multidisciplinary documentation, including input from otolaryngology, orthodontics, and speech therapy.

Genetics

Documentation Requirements

Genetic documentation should include family history, genetic testing results, and counseling notes. Documentation of the inheritance pattern and any genetic syndromes should be included.

Common Clinical Scenarios

Scenarios may involve genetic counseling sessions, diagnostic testing for family members, and discussions about recurrence risks.

Billing Considerations

Coders must ensure that genetic testing codes are linked appropriately to the diagnosis of mandibulofacial dysostosis.

Coding Guidelines

Inclusion Criteria

Use Q75.4 When
  • According to ICD
  • 10 coding guidelines, congenital conditions should be coded based on the specific malformations present
  • Documentation must support the diagnosis and any associated conditions
  • Coders should refer to the official coding guidelines for congenital malformations and ensure compliance with payer
  • specific requirements

Exclusion Criteria

Do NOT use Q75.4 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

21085CPT Code

Surgical correction of mandibular deformity

Clinical Scenario

Used in cases where surgical intervention is required for jaw reconstruction.

Documentation Requirements

Operative reports detailing the procedure and pre-operative assessments.

Specialty Considerations

Documentation should include input from oral and maxillofacial surgery.

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 diagnoses and facilitating better tracking of patient outcomes. Q75.4 provides a distinct code for mandibulofacial dysostosis, which was less clearly defined in ICD-9.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the accuracy of diagnoses and facilitating better tracking of patient outcomes. Q75.4 provides a distinct code for mandibulofacial dysostosis, which was less clearly defined in ICD-9.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the accuracy of diagnoses and facilitating better tracking of patient outcomes. Q75.4 provides a distinct code for mandibulofacial dysostosis, which was less clearly defined in ICD-9.

Resources

Clinical References

  • •
    CDC - Birth Defects

Coding & Billing References

  • •
    CDC - Birth Defects

Frequently Asked Questions

What are the common associated conditions with mandibulofacial dysostosis?

Common associated conditions include hearing loss, cleft palate, and dental anomalies. It is important to document these conditions as they may require additional coding and management.