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v1.0.0
ICD-10 Guide
ICD-10 CodesQ85.03

Q85.03

Billable

Schwannomatosis

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

Code Description

ICD-10 Q85.03 is a billable code used to indicate a diagnosis of schwannomatosis.

Key Diagnostic Point:

Schwannomatosis is a rare genetic disorder characterized by the development of multiple schwannomas, which are benign tumors that arise from Schwann cells, the cells that form the myelin sheath around nerves. Unlike neurofibromatosis type 1 and type 2, schwannomatosis typically does not involve the central nervous system and is primarily associated with peripheral nerve tumors. Patients may experience chronic pain, neurological deficits, and other complications due to tumor growth. The condition is often inherited in an autosomal dominant pattern, and genetic mutations in the SMARCB1 or LZTR1 genes have been implicated. Diagnosis is usually confirmed through imaging studies such as MRI, which can reveal the presence of schwannomas, and genetic testing may be performed to identify specific mutations. Management often involves surgical intervention to remove symptomatic tumors, pain management, and regular monitoring for tumor growth. Given its congenital nature, coding for schwannomatosis requires careful attention to the patient's clinical history and genetic background.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and symptoms among patients
  • Need for genetic testing and interpretation of results
  • Differentiation from other neurofibromatosis types
  • Potential for multiple tumor sites requiring detailed documentation

Audit Risk Factors

  • Inadequate documentation of genetic testing results
  • Failure to specify the number and location of schwannomas
  • Misclassification of schwannomatosis as neurofibromatosis
  • Lack of comprehensive patient history regarding symptoms

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed family history, growth and development assessments, and symptom tracking are essential for pediatric patients with schwannomatosis.

Common Clinical Scenarios

Pediatric patients presenting with unexplained pain or neurological deficits, requiring imaging and genetic evaluation.

Billing Considerations

Consideration of developmental milestones and the impact of tumors on growth and function in children.

Genetics

Documentation Requirements

Genetic counseling notes, results of genetic tests, and family pedigree charts are crucial for accurate coding.

Common Clinical Scenarios

Patients undergoing genetic testing for familial schwannomatosis or presenting with multiple schwannomas.

Billing Considerations

Understanding the inheritance patterns and implications for family members is vital for genetic coding.

Coding Guidelines

Inclusion Criteria

Use Q85.03 When
  • Follow the official ICD
  • CM guidelines for coding congenital conditions, ensuring accurate documentation of the patient's clinical presentation and any associated genetic findings

Exclusion Criteria

Do NOT use Q85.03 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

64727CPT Code

Excision of peripheral nerve tumor

Clinical Scenario

Used when a schwannoma is surgically removed.

Documentation Requirements

Operative report detailing the tumor's location and size.

Specialty Considerations

Ensure that the procedure is linked to the diagnosis of schwannomatosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 allows for more specific coding of schwannomatosis, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 allows for more specific coding of schwannomatosis, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    National Organization for Rare Disorders (NORD)

Coding & Billing References

  • •
    National Organization for Rare Disorders (NORD)

Frequently Asked Questions

What is the primary difference between schwannomatosis and neurofibromatosis?

Schwannomatosis primarily involves the development of multiple schwannomas without the central nervous system involvement seen in neurofibromatosis types 1 and 2. Genetic mutations associated with schwannomatosis are also distinct.