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ICD-10 Guide
ICD-10 CodesE34.321

E34.321

Billable

Primary insulin-like growth factor-1 (IGF-1) deficiency

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

Code Description

ICD-10 E34.321 is a billable code used to indicate a diagnosis of primary insulin-like growth factor-1 (igf-1) deficiency.

Key Diagnostic Point:

Primary insulin-like growth factor-1 (IGF-1) deficiency is a rare endocrine disorder characterized by insufficient levels of IGF-1, a hormone crucial for growth and development. This condition can lead to significant growth abnormalities, particularly in children, manifesting as short stature and delayed puberty. IGF-1 is primarily produced in the liver and its secretion is stimulated by growth hormone (GH). Deficiency can arise from various causes, including genetic mutations affecting the GH-IGF-1 axis, malnutrition, or other underlying endocrine disorders. Patients may present with symptoms such as reduced growth velocity, delayed skeletal maturation, and other associated endocrine dysfunctions. The diagnosis is typically confirmed through serum IGF-1 levels, alongside clinical evaluation and family history. Management may involve GH therapy, nutritional support, and monitoring for associated conditions such as polyglandular autoimmune syndromes or thymus disorders, which can complicate the clinical picture.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of endocrine disorders and their interrelations.
  • Differentiation from other growth disorders can be challenging.
  • Documentation must include specific lab results and clinical findings.
  • Potential overlap with other ICD-10 codes related to growth abnormalities.

Audit Risk Factors

  • Inadequate documentation of IGF-1 levels.
  • Failure to document associated conditions or symptoms.
  • Misclassification with other growth disorders.
  • Lack of clear linkage between diagnosis and treatment provided.

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Growth charts, IGF-1 serum levels, and detailed patient history.

Common Clinical Scenarios

Evaluation of short stature in children, assessment of delayed puberty.

Billing Considerations

Consideration of familial patterns and genetic testing may be necessary.

Endocrinology

Documentation Requirements

Comprehensive endocrine evaluation, including hormone levels and imaging studies.

Common Clinical Scenarios

Management of growth hormone therapy, monitoring for side effects.

Billing Considerations

Need to assess for other endocrine disorders that may coexist.

Coding Guidelines

Inclusion Criteria

Use E34.321 When
  • According to the official coding guidelines, E34
  • 321 should be used when there is a confirmed diagnosis of primary IGF
  • 1 deficiency
  • Documentation must support the diagnosis with laboratory results and clinical findings

Exclusion Criteria

Do NOT use E34.321 When
  • Exclusion criteria include secondary causes of growth hormone deficiency

Related ICD-10 Codes

Related CPT Codes

83001CPT Code

Growth hormone, serum

Clinical Scenario

Used to confirm diagnosis of IGF-1 deficiency.

Documentation Requirements

Document the reason for testing and results.

Specialty Considerations

Endocrinologists should ensure comprehensive evaluation of growth patterns.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of growth disorders, enabling better tracking of IGF-1 deficiency cases and improving the accuracy of treatment data.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of growth disorders, enabling better tracking of IGF-1 deficiency cases and improving the accuracy of treatment data.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of growth disorders, enabling better tracking of IGF-1 deficiency cases and improving the accuracy of treatment data.

Resources

Clinical References

  • •
    Endocrine Society Guidelines

Coding & Billing References

  • •
    Endocrine Society Guidelines

Frequently Asked Questions

What are the common symptoms of IGF-1 deficiency?

Common symptoms include short stature, delayed puberty, and reduced growth velocity. Patients may also experience psychosocial issues related to their growth.