ICD-10 Code E05.41 – Thyrotoxicosis factitia with thyrotoxic crisis or storm (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E05.41 – Thyrotoxicosis factitia with thyrotoxic crisis or storm
What it is
This code identifies thyrotoxicosis caused by excess thyroid hormone intake, complicated by thyroid storm. Use it when documentation shows factitious thyrotoxicosis with a severe hyperthyroid crisis.
Clinical signs
Clinical features vary; refer to documentation. Typical thyroid storm findings may include marked agitation, confusion, fever, tachycardia, or other signs of acute thyrotoxicosis.
When to use this code
Use E05.41 when the record clearly states thyrotoxicosis factitia and thyroid storm, thyrotoxic crisis, or equivalent wording. It fits cases where hormone excess is due to ingestion rather than endogenous thyroid disease. If the cause or crisis status is unclear, check documentation before coding.
Do not use for
Do not use this code for uncomplicated thyrotoxicosis factitia without crisis. Do not assign it when the chart describes another cause of hyperthyroidism or when thyroid storm is not documented.
Coding tip
Confirm both elements are documented: factitious cause and thyrotoxic crisis or storm.