Myxedema coma

This code represents myxedema coma, a rare but severe and life-threatening decompensated state of hypothyroidism. It is characterized by extreme hypothermia, profound weakness, altered mental status, and often involves multi-organ system failure.

Use this code for patients presenting with the critical signs and symptoms of myxedema coma, typically in an emergency or intensive care setting. Documentation should clearly indicate a diagnosis of myxedema coma, often supported by laboratory findings of severe hypothyroidism and the characteristic clinical presentation.

• This code should be sequenced as the primary diagnosis when myxedema coma is the reason for the encounter.
• Code all associated manifestations and complications, such as hypothermia, respiratory failure, or shock, as secondary diagnoses.
• Differentiate from severe hypothyroidism without coma; the "coma" aspect is critical for this specific code.