Conn's syndrome

This code represents Conn's syndrome, a primary hyperaldosteronism caused by an aldosterone-producing adenoma of the adrenal cortex. It leads to excessive production of aldosterone, resulting in hypertension, hypokalemia, and metabolic alkalosis.

Use this code when documentation explicitly states a diagnosis of Conn's syndrome or primary hyperaldosteronism due to an adrenal adenoma. Supporting documentation typically includes imaging reports confirming an adrenal adenoma and laboratory findings consistent with elevated aldosterone and suppressed renin.

• Differentiate from other forms of primary hyperaldosteronism, such as bilateral adrenal hyperplasia (E26.02).
• Ensure documentation specifies the etiology as an adenoma for accurate coding.
• Code any associated manifestations, such as hypertension (I10) or hypokalemia (E87.6), as secondary diagnoses.