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ICD-10 Guide
ICD-10 CodesE31.22

E31.22

Billable

Multiple endocrine neoplasia [MEN] type IIA

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

Code Description

ICD-10 E31.22 is a billable code used to indicate a diagnosis of multiple endocrine neoplasia [men] type iia.

Key Diagnostic Point:

Multiple endocrine neoplasia type IIA (MEN IIA) is a hereditary syndrome characterized by the development of tumors in multiple endocrine glands. The most common manifestations include medullary thyroid carcinoma, pheochromocytoma, and primary hyperparathyroidism. Patients may also experience growth abnormalities due to hormonal imbalances, particularly during puberty, as the condition can lead to precocious puberty or delayed growth. Polyglandular dysfunction is a hallmark of MEN IIA, where multiple glands are affected, leading to a complex interplay of symptoms. Thymus disorders may also be present, as the thymus gland can be involved in the immune response, which is often altered in patients with MEN syndromes. The diagnosis is typically made through genetic testing and clinical evaluation, with a focus on family history and the presence of associated tumors. Early detection and management are crucial to prevent complications associated with the tumors and hormonal imbalances.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Requires understanding of genetic predisposition and familial patterns.
  • Involves multiple organ systems and associated conditions.
  • Documentation must include detailed family history and clinical findings.
  • Differentiating between types of endocrine tumors can be complex.

Audit Risk Factors

  • Inadequate documentation of family history.
  • Failure to document all affected endocrine glands.
  • Misclassification of tumor types.
  • Lack of genetic testing results in the medical record.

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

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

Common Clinical Scenarios

Patients presenting with symptoms of hyperparathyroidism, thyroid nodules, or adrenal tumors.

Billing Considerations

Endocrinologists must ensure all relevant endocrine glands are evaluated and documented.

Oncology

Documentation Requirements

Detailed pathology reports and treatment plans for tumors.

Common Clinical Scenarios

Management of medullary thyroid carcinoma or pheochromocytoma.

Billing Considerations

Oncologists should document tumor staging and treatment response.

Coding Guidelines

Inclusion Criteria

Use E31.22 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of all associated conditions and symptoms
  • Include family history and genetic testing results when applicable

Exclusion Criteria

Do NOT use E31.22 When
  • Exclude conditions that do not meet the criteria for MEN IIA

Related ICD-10 Codes

Related CPT Codes

88305CPT Code

Pathology examination of tissue

Clinical Scenario

Used when a biopsy is performed on a suspected tumor.

Documentation Requirements

Pathology report must be included in the medical record.

Specialty Considerations

Oncologists should ensure that all tumor types are accurately documented.

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 accuracy of data collection and reimbursement processes. The detailed coding structure helps in better tracking of patient outcomes and management of these complex conditions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of MEN syndromes, improving the accuracy of data collection and reimbursement processes. The detailed coding structure helps in better tracking of patient outcomes and management of these complex conditions.

Reimbursement & Billing Impact

reimbursement processes. The detailed coding structure helps in better tracking of patient outcomes and management of these complex conditions.

Resources

Clinical References

  • •
    National Institutes of Health - MEN Syndromes

Coding & Billing References

  • •
    National Institutes of Health - MEN Syndromes

Frequently Asked Questions

What are the common symptoms of MEN IIA?

Common symptoms include hypercalcemia, thyroid nodules, hypertension due to pheochromocytoma, and symptoms related to hormonal imbalances such as growth abnormalities.