MONDO_0018458 (familial hypocalciuric hypercalcemia) (FHH) is a generally asymptomatic genetic disorder of phosphocalcic metabolism characterized by lifelong moderate hypercalcemia along with normo- or hypocalciuria and elevated plasma parathyroid hormone (PTH) concentration. Also known as: familial benign hypercalcemia, familial benign hypocalciuric hypercalcemia.