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ICD-10 Guide
ICD-10 CodesE71.118

E71.118

Billable

Other branched-chain organic acidurias

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

Code Description

ICD-10 E71.118 is a billable code used to indicate a diagnosis of other branched-chain organic acidurias.

Key Diagnostic Point:

Other branched-chain organic acidurias refer to a group of rare metabolic disorders characterized by the accumulation of branched-chain amino acids (BCAAs) and their corresponding organic acids in the body due to enzyme deficiencies. These conditions arise from genetic mutations affecting the enzymes responsible for the catabolism of BCAAs, which include leucine, isoleucine, and valine. The most common disorders in this category include maple syrup urine disease (MSUD), but E71.118 encompasses other less common variants that do not fit into the standard classifications. Symptoms can vary widely but often include metabolic crises, neurological impairment, and developmental delays. Diagnosis typically involves biochemical testing to measure amino acid levels in blood and urine, alongside genetic testing to identify specific enzyme deficiencies. Management strategies focus on dietary restrictions to limit BCAA intake, supplementation of essential amino acids, and close monitoring of metabolic status to prevent acute complications. Early diagnosis and intervention are crucial to improving outcomes and preventing long-term neurological damage.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying enzyme deficiencies
  • Need for biochemical testing for accurate diagnosis
  • Differentiation from other metabolic disorders
  • Potential for overlapping symptoms with other conditions

Audit Risk Factors

  • Inadequate documentation of enzyme testing results
  • Failure to specify the type of branched-chain organic aciduria
  • Lack of genetic testing documentation
  • Misclassification with other amino acid disorders

Specialty Focus

Medical Specialties

Genetics

Documentation Requirements

Detailed family history, genetic testing results, and metabolic profiles.

Common Clinical Scenarios

Patients presenting with developmental delays, metabolic crises, or unexplained neurological symptoms.

Billing Considerations

Ensure that genetic testing results are clearly documented to support the diagnosis.

Pediatrics

Documentation Requirements

Growth charts, developmental assessments, and dietary management plans.

Common Clinical Scenarios

Infants with poor feeding, lethargy, or abnormal urine odor.

Billing Considerations

Documenting the clinical course and any metabolic crises is essential for accurate coding.

Coding Guidelines

Inclusion Criteria

Use E71.118 When
  • According to ICD
  • 10 coding guidelines, E71
  • 118 should be used when the specific type of branched
  • chain organic aciduria is not classified elsewhere
  • Coders must ensure that the diagnosis is supported by biochemical and genetic testing results

Exclusion Criteria

Do NOT use E71.118 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

81200CPT Code

Genetic testing for metabolic disorders

Clinical Scenario

Used when confirming a diagnosis of E71.118 through genetic analysis.

Documentation Requirements

Documentation of clinical symptoms and rationale for genetic testing.

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 metabolic disorders, including branched-chain organic acidurias. This specificity aids in better tracking of these rare conditions and improves the accuracy of healthcare data.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of metabolic disorders, including branched-chain organic acidurias. This specificity aids in better tracking of these rare conditions and improves the accuracy of healthcare data.

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

What are branched-chain organic acidurias?

Branched-chain organic acidurias are a group of metabolic disorders caused by deficiencies in enzymes that break down branched-chain amino acids, leading to their accumulation and associated health issues.