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ICD-10 Guide
ICD-10 CodesE71.50

E71.50

Billable

Peroxisomal disorder, unspecified

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 E71.50 is a billable code used to indicate a diagnosis of peroxisomal disorder, unspecified.

Key Diagnostic Point:

Peroxisomal disorders are a group of inherited metabolic conditions caused by defects in the peroxisomes, which are cellular organelles responsible for various metabolic processes, including the breakdown of fatty acids and the synthesis of plasmalogens, essential for myelin production. These disorders can lead to a range of symptoms, including neurological deficits, liver dysfunction, and developmental delays. The unspecified nature of this code indicates that the specific type of peroxisomal disorder has not been clearly defined, which can complicate diagnosis and treatment. Common peroxisomal disorders include Zellweger syndrome, X-linked adrenoleukodystrophy, and rhizomelic chondrodysplasia punctata. Clinicians may observe a variety of clinical presentations, such as hypotonia, seizures, and vision problems, which can overlap with other metabolic disorders, making accurate diagnosis challenging. Genetic testing and biochemical assays are often required to confirm the diagnosis and differentiate between specific peroxisomal disorders. Management typically involves supportive care and addressing specific symptoms, but the lack of a definitive treatment for many of these conditions underscores the importance of accurate coding for appropriate patient management and resource allocation.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of clinical presentations and overlapping symptoms with other metabolic disorders.
  • Need for genetic testing and biochemical assays for accurate diagnosis.
  • Potential for misdiagnosis due to unspecified nature of the code.
  • Variability in treatment approaches based on specific peroxisomal disorder.

Audit Risk Factors

  • Inconsistent documentation of symptoms and clinical findings.
  • Use of unspecified code when a specific diagnosis is available.
  • Lack of genetic testing results in the medical record.
  • Failure to document the rationale for using the unspecified code.

Specialty Focus

Medical Specialties

Genetics

Documentation Requirements

Detailed family history, genetic testing results, and clinical findings.

Common Clinical Scenarios

Patients presenting with developmental delays and metabolic abnormalities.

Billing Considerations

Ensure that genetic counseling notes are included to support the diagnosis.

Pediatrics

Documentation Requirements

Growth charts, developmental assessments, and neurological evaluations.

Common Clinical Scenarios

Infants with hypotonia and seizures requiring metabolic workup.

Billing Considerations

Document all developmental milestones and any referrals to specialists.

Coding Guidelines

Inclusion Criteria

Use E71.50 When
  • Coders should refer to the official ICD
  • CM guidelines for coding and reporting, particularly regarding the use of unspecified codes
  • It is essential to document the clinical rationale for using E71
  • 50 and to ensure that all relevant diagnostic tests and clinical findings are recorded

Exclusion Criteria

Do NOT use E71.50 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

81200CPT Code

Genetic testing for peroxisomal disorders

Clinical Scenario

Used when genetic testing is performed to confirm a suspected peroxisomal disorder.

Documentation Requirements

Documentation of clinical indications for testing and results.

Specialty Considerations

Genetic specialists should ensure comprehensive family history is included.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of peroxisomal disorders, improving the accuracy of patient records and facilitating better management of these complex conditions. However, the unspecified code E71.50 remains in use, necessitating careful documentation to avoid misclassification.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of peroxisomal disorders, improving the accuracy of patient records and facilitating better management of these complex conditions. However, the unspecified code E71.50 remains in use, necessitating careful documentation to avoid misclassification.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    National Organization for Rare Disorders (NORD)

Coding & Billing References

  • •
    National Organization for Rare Disorders (NORD)

Frequently Asked Questions

When should E71.50 be used?

E71.50 should be used when a patient presents with symptoms suggestive of a peroxisomal disorder, but the specific type has not yet been determined. It is important to document the clinical rationale for using this unspecified code.