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ICD-10 Guide
ICD-10 CodesE06.9

E06.9

Billable

Thyroiditis, unspecified

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

Code Description

ICD-10 E06.9 is a billable code used to indicate a diagnosis of thyroiditis, unspecified.

Key Diagnostic Point:

Thyroiditis is an inflammatory condition of the thyroid gland that can result from various causes, including autoimmune disorders, infections, or exposure to certain medications. The unspecified designation indicates that the specific type of thyroiditis has not been determined. Common forms of thyroiditis include Hashimoto's thyroiditis, which is an autoimmune condition leading to hypothyroidism, and subacute thyroiditis, often following a viral infection. Symptoms may include fatigue, weight changes, sensitivity to cold, and changes in heart rate. Diagnosis typically involves thyroid function tests, including TSH, T3, and T4 levels, as well as imaging studies and sometimes biopsy. Treatment varies based on the underlying cause and may include hormone replacement therapy for hypothyroidism or anti-inflammatory medications for inflammation. Iodine deficiency can also contribute to thyroid dysfunction, leading to goiter or hypothyroidism. Understanding the nuances of thyroid function and the implications of thyroiditis is crucial for effective management and coding.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of potential underlying causes for thyroiditis
  • Overlap with other thyroid disorders such as hyperthyroidism and hypothyroidism
  • Need for comprehensive thyroid function tests to determine the specific condition
  • Potential for misdiagnosis or lack of specificity in documentation

Audit Risk Factors

  • Insufficient documentation of symptoms and clinical findings
  • Failure to specify the type of thyroiditis when known
  • Inconsistent use of thyroid function test results
  • Lack of follow-up documentation or treatment plans

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

Detailed clinical notes including symptoms, lab results, and treatment plans.

Common Clinical Scenarios

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

Billing Considerations

Endocrinologists should ensure that all relevant lab results are documented to support the diagnosis.

Primary Care

Documentation Requirements

Comprehensive patient history and physical examination findings.

Common Clinical Scenarios

Routine screenings revealing abnormal thyroid function tests or patients with symptoms suggestive of thyroid dysfunction.

Billing Considerations

Primary care providers should document any referrals to specialists and follow-up care.

Coding Guidelines

Inclusion Criteria

Use E06.9 When
  • According to ICD
  • 10 coding guidelines, E06
  • 9 should be used when the specific type of thyroiditis is not documented
  • Coders should ensure that all relevant clinical information is captured to avoid ambiguity
  • It is important to follow the official coding guidelines for specificity and accuracy

Exclusion Criteria

Do NOT use E06.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

84443CPT Code

Thyroid stimulating hormone (TSH) test

Clinical Scenario

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

Documentation Requirements

Document the reason for the test and the results.

Specialty Considerations

Endocrinologists should correlate test results with clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specificity in coding thyroid disorders, but the unspecified nature of E06.9 can lead to challenges in accurately capturing the patient's condition and treatment needs.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specificity in coding thyroid disorders, but the unspecified nature of E06.9 can lead to challenges in accurately capturing the patient's condition and treatment needs.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American Thyroid Association

Coding & Billing References

  • •
    American Thyroid Association

Frequently Asked Questions

When should I use E06.9?

E06.9 should be used when the specific type of thyroiditis is not documented, but the physician has confirmed an inflammatory condition of the thyroid.