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ICD-10 Guide
ICD-10 CodesE31.20

E31.20

Billable

Multiple endocrine neoplasia [MEN] syndrome, unspecified

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

Code Description

ICD-10 E31.20 is a billable code used to indicate a diagnosis of multiple endocrine neoplasia [men] syndrome, unspecified.

Key Diagnostic Point:

Multiple endocrine neoplasia (MEN) syndrome is a hereditary condition characterized by the development of tumors in multiple endocrine glands. MEN syndromes are classified into types, with MEN type 1 (Wermer's syndrome) and MEN type 2 (Sipple syndrome) being the most recognized. The unspecified designation indicates that the specific type of MEN has not been determined. Patients may experience a variety of symptoms related to hormonal imbalances, including growth abnormalities due to excess hormone production, such as growth hormone from the pituitary gland. Puberty disorders may arise from dysregulation of the hypothalamic-pituitary-gonadal axis, leading to precocious or delayed puberty. Polyglandular dysfunction is common, as multiple glands can be affected, leading to conditions such as hyperparathyroidism, pituitary adenomas, and thyroid tumors. Thymus disorders may also be present, particularly in MEN type 2, where thymic tumors can occur. The complexity of managing these patients lies in the need for regular monitoring and intervention for the various endocrine abnormalities that can arise.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variety of symptoms and conditions associated with MEN syndromes
  • Need for differential diagnosis among various endocrine disorders
  • Potential for multiple concurrent endocrine tumors
  • Variability in clinical presentation and genetic testing results

Audit Risk Factors

  • Inadequate documentation of symptoms and endocrine evaluations
  • Failure to specify the type of MEN syndrome when known
  • Lack of genetic testing results in the medical record
  • Insufficient follow-up documentation for ongoing management

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

Thorough documentation of hormonal levels, imaging studies, and genetic testing results.

Common Clinical Scenarios

Patients presenting with hyperparathyroidism, thyroid nodules, or pituitary adenomas.

Billing Considerations

Endocrinologists must document the specific glands involved and any associated symptoms to support the diagnosis.

Genetics

Documentation Requirements

Detailed family history and genetic testing results to confirm hereditary syndromes.

Common Clinical Scenarios

Patients with a family history of endocrine tumors or syndromes.

Billing Considerations

Geneticists should ensure that the documentation reflects the hereditary nature of the condition and any counseling provided.

Coding Guidelines

Inclusion Criteria

Use E31.20 When
  • According to ICD
  • 10 guidelines, E31
  • 20 should be used when the specific type of MEN syndrome is not documented
  • Coders should ensure that all relevant clinical information is captured to support the diagnosis and any associated conditions

Exclusion Criteria

Do NOT use E31.20 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

83001CPT Code

Thyroid function tests

Clinical Scenario

Used to evaluate thyroid function in patients with MEN syndrome.

Documentation Requirements

Document the rationale for testing and any previous results.

Specialty Considerations

Endocrinologists should ensure comprehensive thyroid evaluations are included in the management plan.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of MEN syndromes, improving the ability to capture the complexity of these conditions. However, the unspecified code E31.20 may lead to challenges in accurately reflecting the patient's clinical status.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of MEN syndromes, improving the ability to capture the complexity of these conditions. However, the unspecified code E31.20 may lead to challenges in accurately reflecting the patient's clinical status.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of MEN syndromes, improving the ability to capture the complexity of these conditions. However, the unspecified code E31.20 may lead to challenges in accurately reflecting the patient's clinical status.

Resources

Clinical References

  • •
    National Institutes of Health - MEN Syndromes

Coding & Billing References

  • •
    National Institutes of Health - MEN Syndromes

Frequently Asked Questions

What is the significance of using E31.20?

E31.20 is used when the specific type of MEN syndrome is not identified. It is crucial for capturing the complexity of the patient's condition and ensuring appropriate management and follow-up.