ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesE05.90

E05.90

Billable

Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

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

Code Description

ICD-10 E05.90 is a billable code used to indicate a diagnosis of thyrotoxicosis, unspecified without thyrotoxic crisis or storm.

Key Diagnostic Point:

Thyrotoxicosis refers to a condition resulting from excessive thyroid hormone levels in the body, leading to a hypermetabolic state. This specific code, E05.90, is used when the thyrotoxicosis is unspecified and does not present as a thyrotoxic crisis or storm, which are acute and severe manifestations of the condition. Common causes of thyrotoxicosis include hyperthyroidism due to Graves' disease, toxic multinodular goiter, or excessive intake of thyroid hormone. Symptoms may include weight loss, increased appetite, anxiety, tremors, heat intolerance, and palpitations. Diagnosis typically involves thyroid function tests, including serum TSH, free T4, and total T3 levels. It is crucial to differentiate thyrotoxicosis from other thyroid disorders, such as hypothyroidism, where there is insufficient thyroid hormone production. Management may involve antithyroid medications, radioactive iodine therapy, or surgery, depending on the underlying cause. Accurate coding is essential for appropriate treatment and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between various thyroid disorders
  • Understanding the nuances of hyperthyroidism vs. thyrotoxicosis
  • Interpreting thyroid function test results accurately
  • Identifying the absence of thyrotoxic crisis or storm

Audit Risk Factors

  • Inadequate documentation of symptoms
  • Failure to specify the underlying cause of thyrotoxicosis
  • Misinterpretation of thyroid function tests
  • Lack of follow-up documentation on treatment response

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

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

Common Clinical Scenarios

Patients presenting with weight loss, anxiety, and elevated thyroid hormone levels.

Billing Considerations

Ensure that all thyroid function tests are documented and that the absence of thyrotoxic crisis is clearly stated.

Primary Care

Documentation Requirements

Comprehensive patient history and physical examination findings.

Common Clinical Scenarios

Patients with unexplained weight loss or palpitations referred for further evaluation.

Billing Considerations

Document any referrals to specialists and the rationale for testing.

Coding Guidelines

Inclusion Criteria

Use E05.90 When
  • According to ICD
  • 10 guidelines, E05
  • 90 should be used when the specific cause of thyrotoxicosis is not documented
  • It is important to ensure that the diagnosis does not meet criteria for a thyrotoxic crisis (E05
  • 01) or other specific conditions

Exclusion Criteria

Do NOT use E05.90 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

84443CPT Code

Thyroid stimulating hormone (TSH)

Clinical Scenario

Used to evaluate thyroid function in patients suspected of thyrotoxicosis.

Documentation Requirements

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

Specialty Considerations

Endocrinologists may require additional tests based on initial findings.

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 plans. E05.90 provides a clear classification for unspecified thyrotoxicosis, facilitating 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 plans. E05.90 provides a clear classification for unspecified thyrotoxicosis, facilitating 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 plans. E05.90 provides a clear classification for unspecified thyrotoxicosis, facilitating better patient management.

Resources

Clinical References

  • •
    American Thyroid Association Guidelines

Coding & Billing References

  • •
    American Thyroid Association Guidelines

Frequently Asked Questions

What is the difference between thyrotoxicosis and hyperthyroidism?

Thyrotoxicosis refers to the clinical syndrome resulting from excess thyroid hormones, while hyperthyroidism is a specific condition where the thyroid gland produces too much hormone. All hyperthyroid patients are thyrotoxic, but not all thyrotoxic patients are hyperthyroid.