Thyrotoxicosis w diffuse goiter w thyrotoxic crisis or storm

This code signifies a severe, life-threatening exacerbation of hyperthyroidism, specifically Graves' disease, characterized by an overactive thyroid gland and a diffusely enlarged thyroid (goiter). It represents a state of extreme thyrotoxicosis with systemic decompensation, often triggered by acute illness or stress.

Use this code when documentation clearly indicates a patient experiencing a thyroid storm or crisis in the context of diffuse toxic goiter. This typically involves signs of severe hypermetabolism, such as high fever, tachycardia, altered mental status, and multi-organ dysfunction. Physician documentation must explicitly state "thyroid storm," "thyrotoxic crisis," or describe the clinical picture consistent with such an event.

• Ensure the documentation explicitly links the thyrotoxic crisis to a diffuse goiter; otherwise, a different E05 subcategory may be more appropriate.
• Always sequence this code as the principal diagnosis if it is the primary reason for the encounter.
• Do not confuse with uncomplicated thyrotoxicosis (E05.00) or other forms of thyrotoxicosis without crisis.