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ICD-10 Guide
ICD-10 CodesE72.09

E72.09

Billable

Other disorders of amino-acid transport

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

Code Description

ICD-10 E72.09 is a billable code used to indicate a diagnosis of other disorders of amino-acid transport.

Key Diagnostic Point:

E72.09 refers to a group of metabolic disorders characterized by the impaired transport of amino acids across cell membranes. These disorders can result from genetic mutations affecting specific transport proteins, leading to abnormal levels of amino acids in the blood and tissues. Clinical manifestations vary widely, including developmental delays, neurological deficits, and metabolic crises. Conditions such as cystinuria, which involves defective cystine transport, and Hartnup disorder, characterized by impaired neutral amino acid transport, fall under this category. Diagnosis typically involves biochemical testing to measure amino acid levels in plasma and urine, alongside genetic testing to identify mutations. Management may include dietary modifications, supplementation, and symptomatic treatment to mitigate complications arising from amino acid imbalances. Early detection and intervention are crucial to prevent long-term sequelae associated with these disorders.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying genetic mutations
  • Diverse clinical presentations
  • Need for biochemical testing for accurate diagnosis
  • Potential overlap with other metabolic disorders

Audit Risk Factors

  • Inadequate documentation of genetic testing results
  • Failure to specify the type of amino acid transport disorder
  • Lack of detailed treatment plans
  • Misclassification of related metabolic disorders

Specialty Focus

Medical Specialties

Genetics

Documentation Requirements

Detailed family history and genetic testing results must be documented.

Common Clinical Scenarios

Patients presenting with unexplained developmental delays or metabolic crises.

Billing Considerations

Ensure accurate coding based on genetic findings and biochemical test results.

Pediatrics

Documentation Requirements

Growth charts, developmental assessments, and dietary history are essential.

Common Clinical Scenarios

Infants or children with failure to thrive or neurological symptoms.

Billing Considerations

Document any referrals to specialists for comprehensive management.

Coding Guidelines

Inclusion Criteria

Use E72.09 When
  • Follow the official ICD
  • CM guidelines for coding metabolic disorders
  • Ensure that the diagnosis is supported by clinical documentation, including laboratory results and genetic testing

Exclusion Criteria

Do NOT use E72.09 When
  • Exclude conditions that are specifically listed under other codes

Related ICD-10 Codes

Related CPT Codes

83088CPT Code

Amino acid analysis

Clinical Scenario

Used when evaluating a patient suspected of having an amino acid transport disorder.

Documentation Requirements

Document the clinical rationale for the test and any relevant patient history.

Specialty Considerations

Genetics specialists should ensure that the test results are interpreted in the context of the patient's overall clinical picture.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of amino acid transport disorders, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better understanding the prevalence and management of these conditions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of amino acid transport disorders, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better understanding the prevalence and management of these conditions.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of amino acid transport disorders, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better understanding the prevalence and management of these conditions.

Resources

Clinical References

  • •
    Genetic Metabolic Disorders

Coding & Billing References

  • •
    Genetic Metabolic Disorders

Frequently Asked Questions

What are the common symptoms of amino acid transport disorders?

Symptoms can vary widely but may include developmental delays, neurological issues, metabolic crises, and failure to thrive in infants.

How is E72.09 diagnosed?

Diagnosis typically involves biochemical testing to measure amino acid levels in blood and urine, along with genetic testing to identify specific mutations.