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ICD-10 Guide
ICD-10 CodesE72.89

E72.89

Billable

Other specified disorders of amino-acid metabolism

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

Code Description

ICD-10 E72.89 is a billable code used to indicate a diagnosis of other specified disorders of amino-acid metabolism.

Key Diagnostic Point:

E72.89 encompasses a variety of metabolic disorders that involve abnormalities in amino acid metabolism. These disorders can arise from genetic enzyme deficiencies that disrupt the normal breakdown or synthesis of amino acids, leading to an accumulation of toxic metabolites or a deficiency of essential amino acids. Common conditions under this code include disorders such as cystathioninuria, hyperprolinemia, and other rare metabolic conditions that do not fit neatly into more specific categories. Clinically, patients may present with a range of symptoms, including neurological deficits, developmental delays, and metabolic crises. Diagnosis typically involves biochemical testing to measure amino acid levels in blood and urine, alongside genetic testing to identify specific enzyme deficiencies. Management strategies often include dietary modifications, supplementation of deficient amino acids, and in some cases, pharmacological interventions. Given the complexity of amino acid metabolism and the potential for overlapping symptoms with other metabolic disorders, accurate diagnosis and coding are crucial for effective treatment and management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying conditions that can be coded under this category
  • Need for precise biochemical testing results for accurate coding
  • Potential overlap with other metabolic disorders requiring careful differentiation
  • Variability in clinical presentation among patients

Audit Risk Factors

  • Insufficient documentation of the specific amino acid disorder
  • Lack of supporting lab results for the diagnosis
  • Inconsistent coding practices among providers
  • Misinterpretation of clinical symptoms leading to incorrect coding

Specialty Focus

Medical Specialties

Genetics

Documentation Requirements

Detailed family history, genetic test results, and clinical findings must be documented.

Common Clinical Scenarios

Patients presenting with unexplained developmental delays or metabolic crises.

Billing Considerations

Genetic counseling may be necessary for families, and documentation should reflect the need for ongoing management.

Pediatrics

Documentation Requirements

Growth charts, developmental assessments, and metabolic screening results are essential.

Common Clinical Scenarios

Infants with abnormal newborn screening results indicating potential amino acid disorders.

Billing Considerations

Close monitoring of dietary intake and growth parameters is critical for accurate management.

Coding Guidelines

Inclusion Criteria

Use E72.89 When
  • Coders should refer to the official ICD
  • CM guidelines for coding and reporting, particularly those related to metabolic disorders
  • Inclusion criteria include documented enzyme deficiencies or specific amino acid abnormalities

Exclusion Criteria

Do NOT use E72.89 When
  • Exclusion criteria involve conditions that are more specifically classified under other codes

Related ICD-10 Codes

Related CPT Codes

84110CPT Code

Amino acid analysis

Clinical Scenario

Used to confirm the diagnosis of an amino acid metabolism disorder.

Documentation Requirements

Results of the amino acid analysis must be included in the patient's medical record.

Specialty Considerations

Geneticists and metabolic specialists often order this test.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of metabolic disorders, enabling better tracking of these conditions and improving patient management. E72.89 provides a broader category for less common disorders that may not have specific codes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of metabolic disorders, enabling better tracking of these conditions and improving patient management. E72.89 provides a broader category for less common disorders that may not have specific codes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of metabolic disorders, enabling better tracking of these conditions and improving patient management. E72.89 provides a broader category for less common disorders that may not have specific codes.

Resources

Clinical References

  • •
    National Organization for Rare Disorders (NORD)

Coding & Billing References

  • •
    National Organization for Rare Disorders (NORD)

Frequently Asked Questions

What types of conditions are included under E72.89?

E72.89 includes various rare metabolic disorders related to amino acid metabolism that do not have a specific code, such as cystathioninuria and hyperprolinemia.