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ICD-10 Guide
ICD-10 CodesE06.3

E06.3

Billable

Autoimmune thyroiditis

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

Code Description

ICD-10 E06.3 is a billable code used to indicate a diagnosis of autoimmune thyroiditis.

Key Diagnostic Point:

Autoimmune thyroiditis, commonly known as Hashimoto's thyroiditis, is a chronic inflammatory condition of the thyroid gland characterized by the immune system attacking the thyroid tissue. This autoimmune response leads to the destruction of thyroid cells, resulting in hypothyroidism in many patients. The condition is often associated with the presence of specific antibodies, such as anti-thyroid peroxidase (anti-TPO) antibodies, which can be detected through blood tests. Symptoms may include fatigue, weight gain, cold intolerance, and depression, among others. The disease can also lead to goiter, which is an enlargement of the thyroid gland. Diagnosis typically involves a combination of clinical evaluation, laboratory tests measuring thyroid function (such as TSH, T3, and T4 levels), and imaging studies if necessary. Management may include thyroid hormone replacement therapy to normalize hormone levels and alleviate symptoms. Autoimmune thyroiditis is more prevalent in women and can be associated with other autoimmune disorders, making it essential for healthcare providers to conduct thorough evaluations.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Presence of multiple autoimmune disorders
  • Variability in symptoms and laboratory findings
  • Need for differential diagnosis with other thyroid disorders
  • Potential for misdiagnosis as hyperthyroidism or other conditions

Audit Risk Factors

  • Inadequate documentation of antibody testing
  • Failure to document the autoimmune nature of the condition
  • Misclassification of hypothyroidism as primary or secondary
  • Lack of follow-up documentation on treatment response

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

Thorough documentation of thyroid function tests, antibody levels, and clinical symptoms.

Common Clinical Scenarios

Patients presenting with fatigue, weight changes, and abnormal thyroid function tests.

Billing Considerations

Ensure that all relevant lab results and clinical findings are documented to support the diagnosis.

Primary Care

Documentation Requirements

Comprehensive patient history, including family history of autoimmune diseases and symptoms.

Common Clinical Scenarios

Routine screening of patients with symptoms suggestive of thyroid dysfunction.

Billing Considerations

Documenting referrals to specialists for further evaluation and management.

Coding Guidelines

Inclusion Criteria

Use E06.3 When
  • According to ICD
  • 10 guidelines, E06
  • 3 should be used when the autoimmune nature of the thyroiditis is confirmed through laboratory tests
  • It is important to document the presence of antibodies and any related symptoms

Exclusion Criteria

Do NOT use E06.3 When
  • Exclusion criteria include other types of thyroiditis that are not autoimmune in nature

Related ICD-10 Codes

Related CPT Codes

84443CPT Code

Thyroid stimulating hormone (TSH)

Clinical Scenario

Used to evaluate thyroid function in patients suspected of having autoimmune thyroiditis.

Documentation Requirements

Document the reason for testing and any relevant clinical findings.

Specialty Considerations

Endocrinologists may require additional tests such as free T4 and antibody levels.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of autoimmune thyroiditis, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better patient management and research outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of autoimmune thyroiditis, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better patient management and research outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of autoimmune thyroiditis, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better patient management and research outcomes.

Resources

Clinical References

  • •
    American Thyroid Association Guidelines

Coding & Billing References

  • •
    American Thyroid Association Guidelines

Frequently Asked Questions

What are the common symptoms of autoimmune thyroiditis?

Common symptoms include fatigue, weight gain, cold intolerance, depression, and goiter. Symptoms can vary widely among individuals.