Thyrotxcosis w toxic single thyroid nodule w thyrotxc crisis

This code signifies a severe, life-threatening exacerbation of hyperthyroidism (thyrotoxic crisis or storm) occurring in a patient with a single, overactive thyroid nodule. It represents a medical emergency characterized by systemic decompensation due to excessive thyroid hormone levels.

Use this code when documentation clearly indicates a diagnosis of thyrotoxic crisis or storm in a patient with a toxic single thyroid nodule. Supporting documentation would include clinical signs of severe hyperthyroidism (e.g., fever, tachycardia, altered mental status, heart failure) and laboratory confirmation of elevated thyroid hormones.

• Ensure the documentation explicitly states "thyrotoxic crisis" or "thyroid storm" in addition to the toxic single nodule.
• Do not use this code for uncomplicated thyrotoxicosis due to a toxic single nodule without evidence of crisis.
• Consider sequencing this code as the primary diagnosis when the crisis is the reason for the encounter.