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ICD-10 Guide
ICD-10 CodesE05.00

E05.00

Billable

Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm

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

Code Description

ICD-10 E05.00 is a billable code used to indicate a diagnosis of thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm.

Key Diagnostic Point:

Thyrotoxicosis with diffuse goiter is a condition characterized by an excess of thyroid hormones in the bloodstream, leading to a hypermetabolic state. This condition is often associated with Graves' disease, an autoimmune disorder that causes the thyroid gland to enlarge and produce excessive amounts of thyroid hormones. Patients may present with symptoms such as weight loss, increased appetite, anxiety, tremors, heat intolerance, and palpitations. The diffuse goiter indicates that the thyroid gland is uniformly enlarged, which can be palpated during a physical examination. Unlike thyrotoxic crisis or storm, which is a life-threatening exacerbation of hyperthyroidism, this condition is typically managed with antithyroid medications, radioactive iodine therapy, or surgery. Diagnosis is confirmed through thyroid function tests, which typically show elevated levels of free T4 and suppressed TSH. It is crucial to differentiate this condition from other thyroid disorders, such as hypothyroidism or thyroiditis, to ensure appropriate management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from other thyroid disorders such as hypothyroidism and thyroiditis.
  • Need for accurate thyroid function test interpretation.
  • Potential overlap with other ICD-10 codes related to hyperthyroidism.
  • Documentation of symptoms and clinical findings to support the diagnosis.

Audit Risk Factors

  • Inadequate documentation of symptoms and clinical findings.
  • Failure to document thyroid function test results.
  • Misclassification of the condition as a thyrotoxic crisis.
  • Inconsistent coding of related conditions or treatments.

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

Thorough documentation of thyroid function tests, clinical symptoms, and treatment plans.

Common Clinical Scenarios

Patients presenting with weight loss, anxiety, and palpitations; follow-up visits for medication management.

Billing Considerations

Ensure that all relevant lab results are included in the medical record to support the diagnosis.

Primary Care

Documentation Requirements

Detailed patient history, physical examination findings, and any referrals to specialists.

Common Clinical Scenarios

Initial evaluation of hyperthyroid symptoms; management of patients on antithyroid medications.

Billing Considerations

Document any patient education provided regarding the condition and its management.

Coding Guidelines

Inclusion Criteria

Use E05.00 When
  • According to ICD
  • 10 guidelines, E05
  • 00 should be used when a patient has thyrotoxicosis with diffuse goiter but does not present with a thyrotoxic crisis
  • Documentation must support the diagnosis, including lab results and clinical findings

Exclusion Criteria

Do NOT use E05.00 When
  • Exclusion criteria include conditions that do not meet the definition of thyrotoxicosis

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 thyrotoxicosis.

Documentation Requirements

Document the reason for the test and the patient's symptoms.

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, improving the accuracy of diagnoses and treatment tracking. E05.00 provides a clear distinction between thyrotoxicosis and other thyroid conditions, aiding in better patient management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of thyroid disorders, improving the accuracy of diagnoses and treatment tracking. E05.00 provides a clear distinction between thyrotoxicosis and other thyroid conditions, aiding in better patient management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of thyroid disorders, improving the accuracy of diagnoses and treatment tracking. E05.00 provides a clear distinction between thyrotoxicosis and other thyroid conditions, aiding in better patient management.

Resources

Clinical References

  • •
    American Thyroid Association Guidelines

Coding & Billing References

  • •
    American Thyroid Association Guidelines

Frequently Asked Questions

What are the common symptoms of thyrotoxicosis?

Common symptoms include weight loss, increased appetite, anxiety, tremors, heat intolerance, and palpitations.

How is thyrotoxicosis diagnosed?

Diagnosis is made through clinical evaluation and thyroid function tests showing elevated T4 and suppressed TSH levels.

What treatments are available for thyrotoxicosis?

Treatment options include antithyroid medications, radioactive iodine therapy, and surgical intervention.