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ICD-10 Guide
ICD-10 CodesE05.81

E05.81

Billable

Other thyrotoxicosis with thyrotoxic crisis or storm

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

Code Description

ICD-10 E05.81 is a billable code used to indicate a diagnosis of other thyrotoxicosis with thyrotoxic crisis or storm.

Key Diagnostic Point:

Thyrotoxicosis refers to a condition where there is an excess of thyroid hormones in the body, leading to a hypermetabolic state. E05.81 specifically denotes cases of thyrotoxicosis that escalate into a thyrotoxic crisis or storm, a life-threatening condition characterized by severe symptoms such as fever, tachycardia, altered mental status, and gastrointestinal disturbances. This crisis can occur in patients with pre-existing hyperthyroidism or can be precipitated by stressors such as infection, surgery, or trauma. The pathophysiology involves an exaggerated response to thyroid hormones, leading to increased metabolic demands that the body cannot meet. Diagnosis typically involves clinical evaluation and laboratory tests, including serum thyroid hormone levels (T3, T4) and thyroid-stimulating hormone (TSH) levels. Management requires immediate medical intervention, often including antithyroid medications, beta-blockers, and supportive care. Understanding the nuances of this condition is crucial for accurate coding and appropriate patient management.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Differentiating between various types of thyrotoxicosis
  • Identifying precipitating factors for thyrotoxic crisis
  • Understanding the clinical presentation and severity of symptoms
  • Interpreting thyroid function tests accurately

Audit Risk Factors

  • Inadequate documentation of acute symptoms
  • Failure to note precipitating factors
  • Misinterpretation of thyroid function test results
  • Lack of clarity in treatment interventions

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

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

Common Clinical Scenarios

Patients presenting with acute symptoms of hyperthyroidism, requiring urgent intervention.

Billing Considerations

Ensure all precipitating factors and acute management strategies are documented clearly.

Emergency Medicine

Documentation Requirements

Detailed account of presenting symptoms, vital signs, and immediate treatment provided.

Common Clinical Scenarios

Patients arriving in crisis with severe symptoms of thyrotoxicosis.

Billing Considerations

Document the urgency of the situation and any life-saving measures taken.

Coding Guidelines

Inclusion Criteria

Use E05.81 When
  • According to ICD
  • 10 guidelines, E05
  • 81 should be used when there is clear documentation of thyrotoxicosis leading to a thyrotoxic crisis
  • It is important to ensure that the clinical documentation supports the diagnosis and that other potential causes of hyperthyroidism are ruled out

Exclusion Criteria

Do NOT use E05.81 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 suspected thyrotoxicosis.

Documentation Requirements

Document the reason for testing and results.

Specialty Considerations

Endocrinologists should ensure comprehensive thyroid panels are ordered.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like thyrotoxicosis, improving the accuracy of patient records and facilitating better management of thyroid disorders.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like thyrotoxicosis, improving the accuracy of patient records and facilitating better management of thyroid disorders.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like thyrotoxicosis, improving the accuracy of patient records and facilitating better management of thyroid disorders.

Resources

Clinical References

  • •
    American Thyroid Association Guidelines

Coding & Billing References

  • •
    American Thyroid Association Guidelines

Frequently Asked Questions

What are the key symptoms of a thyrotoxic crisis?

Key symptoms include high fever, rapid heart rate, agitation, confusion, and gastrointestinal disturbances. Immediate medical attention is required.