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ICD-10 Guide
ICD-10 CodesE01.8

E01.8

Billable

Other iodine-deficiency related thyroid disorders and allied conditions

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

Code Description

ICD-10 E01.8 is a billable code used to indicate a diagnosis of other iodine-deficiency related thyroid disorders and allied conditions.

Key Diagnostic Point:

Iodine deficiency is a significant public health issue that can lead to various thyroid disorders, including goiter, hypothyroidism, and other allied conditions. Iodine is essential for the synthesis of thyroid hormones, which regulate metabolism, growth, and development. When iodine levels are insufficient, the thyroid gland may enlarge (goiter) in an attempt to capture more iodine from the bloodstream. This can lead to hypothyroidism, characterized by symptoms such as fatigue, weight gain, cold intolerance, and depression. In some cases, iodine deficiency can also contribute to hyperthyroidism, although this is less common. Diagnosis typically involves thyroid function tests, including serum TSH (Thyroid Stimulating Hormone) and free T4 levels. Treatment often includes iodine supplementation and monitoring of thyroid function. The complexity of coding for iodine-deficiency related disorders arises from the need to differentiate between various thyroid conditions and their underlying causes, as well as the potential for coexisting conditions that may complicate the clinical picture.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between various thyroid disorders (hypothyroidism, hyperthyroidism, goiter)
  • Understanding the clinical implications of iodine deficiency
  • Interpreting thyroid function tests accurately
  • Identifying and coding for coexisting conditions

Audit Risk Factors

  • Inaccurate documentation of thyroid function test results
  • Failure to specify the type of thyroid disorder
  • Misidentification of iodine deficiency as the sole cause of thyroid dysfunction
  • Inadequate documentation of patient history related to iodine intake

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

Thorough documentation of thyroid function tests, patient history, and treatment plans.

Common Clinical Scenarios

Patients presenting with symptoms of hypothyroidism or hyperthyroidism, goiter evaluation.

Billing Considerations

Ensure clear differentiation between primary and secondary thyroid disorders.

Primary Care

Documentation Requirements

Comprehensive patient history, including dietary iodine intake and family history of thyroid disorders.

Common Clinical Scenarios

Routine screening for thyroid dysfunction in at-risk populations.

Billing Considerations

Documenting referrals to specialists for complex cases.

Coding Guidelines

Inclusion Criteria

Use E01.8 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the patient's clinical condition
  • Include relevant laboratory results and specify the type of thyroid disorder when applicable

Exclusion Criteria

Do NOT use E01.8 When
  • Exclude conditions that are not related to iodine deficiency

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 iodine deficiency-related disorders.

Documentation Requirements

Document the reason for the test and any relevant clinical findings.

Specialty Considerations

Endocrinologists may require additional tests to assess thyroid hormone levels.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of thyroid disorders, including those related to iodine deficiency. This specificity aids in better tracking of public health issues related to iodine deficiency and improves the accuracy of treatment and management strategies.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of thyroid disorders, including those related to iodine deficiency. This specificity aids in better tracking of public health issues related to iodine deficiency and improves the accuracy of treatment and management strategies.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of thyroid disorders, including those related to iodine deficiency. This specificity aids in better tracking of public health issues related to iodine deficiency and improves the accuracy of treatment and management strategies.

Resources

Clinical References

  • •
    World Health Organization - Iodine Deficiency

Coding & Billing References

  • •
    World Health Organization - Iodine Deficiency

Frequently Asked Questions

What are the common symptoms of iodine deficiency?

Common symptoms include fatigue, weight gain, cold intolerance, and in some cases, goiter formation. Patients may also experience cognitive impairments and developmental issues in children.