E05.90
Thyrotoxicosis, unspecified without thyrotoxic crisis
Endocrine, nutritional and metabolic diseases Billable
Quick Reference
Hyperthyroidism without specification of cause (Graves', toxic nodule, etc.)
Clinical Information
When to Use This Code
Hyperthyroidism without specification of cause (Graves', toxic nodule, etc.)
Common Clinical Scenarios
- Hyperthyroidism workup
- New diagnosis of overactive thyroid
- Thyrotoxicosis on antithyroid drugs
- Pre-radioactive iodine treatment
Documentation Requirements
- Document TSH (suppressed) and free T4 levels
- Record symptoms: palpitations, weight loss, tremor, heat intolerance
- Note if Graves' disease vs toxic nodule vs other cause
- Document treatment: methimazole, PTU, or radioactive iodine
Coding Guidelines
Inclusion Terms
These terms are included in this code:
HyperthyroidismOveractive thyroidThyrotoxicosis NOS
Exclusion Terms
Do NOT use this code for:
- Graves' disease with specific coding (E05.0-)
- Thyrotoxic crisis/storm (E05.91)
- Subclinical hyperthyroidism (E05.8)
Coding Notes
Use more specific codes when etiology known
E05.00 for Graves' disease, E05.10 for toxic nodule
Monitor for atrial fibrillation and osteoporosis
Related ICD-10 Codes
Consider these related codes based on patient presentation:
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Code
E05.90
Category
Endocrine, nutritional and metabolic diseases
Billable Status
Billable
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