disease has major feature Increased circulating prolactin concentration hyperprolactinemia hyperprolactinaemia prolactin secretion, inappropriate ICD9:253.1 hyperprolactinemias SCTID:237662005 inappropriate prolactin secretion syndrome syndrome, prolactin hypersecretion NANDO:2200322 NANDO:2100115 hyperprolactinemia (disease) hypersecretion syndrome, prolactin hyperprolactinemia (disease) UMLS:C0020514 inappropriate prolactin secretion MONDO:0005804 hyperprolactinemia inappropriate secretion prolactin prolactin, inappropriate secretion HP:0000870 prolactin hypersecretion syndrome ICD10CM:E22.1 EFO:0007319 Abnormally high level of prolactin in the blood. secretion prolactin, inappropriate MEDGEN:5698 MESH:D006966 secretion, inappropriate prolactin hyperpituitarism