Secondary hyperaldosteronism

Secondary hyperaldosteronism is a condition characterized by excessive production of aldosterone due to an underlying cause outside of the adrenal glands, such as renal artery stenosis, congestive heart failure, or cirrhosis. This overproduction leads to sodium retention, potassium excretion, and hypertension. It is distinct from primary hyperaldosteronism, where the adrenal glands themselves are the source of the excess aldosterone.

This code is appropriate when documentation clearly indicates hyperaldosteronism resulting from an extra-adrenal stimulus. Common scenarios include patients with renovascular hypertension, edematous states, or diuretic use leading to elevated renin and aldosterone levels. Supporting documentation should specify the secondary nature of the hyperaldosteronism and ideally identify the underlying cause.

• Always code the underlying cause of the secondary hyperaldosteronism first, if known and documented.
• Differentiate carefully from primary hyperaldosteronism (E26.0-), which originates in the adrenal glands.
• Ensure documentation specifies "secondary" to avoid confusion with unspecified hyperaldosteronism (E26.9).