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v1.0.0
ICD-10 Guide
ICD-10 CodesE74.09

E74.09

Billable

Other glycogen storage disease

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

Code Description

ICD-10 E74.09 is a billable code used to indicate a diagnosis of other glycogen storage disease.

Key Diagnostic Point:

Glycogen storage diseases (GSDs) are a group of inherited metabolic disorders characterized by the abnormal storage and metabolism of glycogen due to enzyme deficiencies. E74.09 specifically refers to other forms of glycogen storage diseases that do not fall under the more commonly recognized types, such as Pompe disease or von Gierke disease. These conditions can lead to a variety of symptoms, including muscle weakness, cardiomyopathy, hypoglycemia, and hepatomegaly, depending on the specific enzyme deficiency involved. The pathophysiology of GSDs involves the accumulation of glycogen in tissues, which can disrupt normal cellular function and lead to organ damage. Diagnosis typically involves biochemical tests to identify enzyme deficiencies, genetic testing, and sometimes muscle biopsy. Management may include dietary modifications, enzyme replacement therapy, and supportive care to address symptoms and prevent complications. Accurate coding is essential for proper reimbursement and to ensure that patients receive appropriate care.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of enzyme deficiencies leading to different clinical presentations.
  • Need for precise documentation of specific enzyme deficiencies.
  • Potential overlap with other metabolic disorders.
  • Variability in clinical management and treatment protocols.

Audit Risk Factors

  • Inadequate documentation of enzyme deficiencies.
  • Failure to specify the type of glycogen storage disease.
  • Misclassification of related metabolic disorders.
  • Lack of genetic testing documentation.

Specialty Focus

Medical Specialties

Genetics

Documentation Requirements

Genetic test results, family history, and detailed clinical evaluations.

Common Clinical Scenarios

Patients presenting with unexplained muscle weakness or metabolic crises.

Billing Considerations

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

Pediatrics

Documentation Requirements

Growth charts, developmental assessments, and dietary history.

Common Clinical Scenarios

Infants or children with hepatomegaly or hypoglycemic episodes.

Billing Considerations

Documenting the age of onset and progression of symptoms is crucial.

Coding Guidelines

Inclusion Criteria

Use E74.09 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • Include specific enzyme deficiencies when available, and adhere to the inclusion criteria for glycogen storage diseases

Exclusion Criteria

Do NOT use E74.09 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

81406CPT Code

Genetic testing for glycogen storage diseases

Clinical Scenario

Used when genetic testing is performed to confirm a glycogen storage disease diagnosis.

Documentation Requirements

Document the specific tests performed and the clinical rationale.

Specialty Considerations

Genetic counseling notes should be included.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of glycogen storage diseases, improving the accuracy of diagnoses and treatment plans. E74.09 provides a broader category for less common GSDs, which may have been underrepresented in ICD-9.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of glycogen storage diseases, improving the accuracy of diagnoses and treatment plans. E74.09 provides a broader category for less common GSDs, which may have been underrepresented in ICD-9.

Reimbursement & Billing Impact

reimbursement and to avoid claim denials.

Resources

Clinical References

  • •
    National Organization for Rare Disorders (NORD)

Coding & Billing References

  • •
    National Organization for Rare Disorders (NORD)

Frequently Asked Questions

What are the common symptoms of glycogen storage diseases?

Common symptoms include muscle weakness, hypoglycemia, hepatomegaly, and cardiomyopathy, which can vary based on the specific enzyme deficiency.

How is a glycogen storage disease diagnosed?

Diagnosis typically involves biochemical tests to identify enzyme deficiencies, genetic testing, and clinical evaluations.