disease arises from feature disease has basis in feature hyperparathyroidism secondary hyperparathyroidism tertiary hyperparathyroidism UMLS:C0271858 MEDGEN:488837 An overproduction of parathyroid hormone that is autonomous and often associated with chronic secondary hyperparathyroidism. MONDO:0021132 NCIT:C114821 icd11.foundation:10683191 tertiary hyperparathyroidism SCTID:78200003 ICD9:588.89