premature menopause https://github.com/monarch-initiative/mondo/issues/9097 https://www.malacards.org/card/premature_menopause premature ovarian failure Cessation of menstruation before the age of 40. Symptoms include hot flashes, night sweats, mood swings, and decreased sex drive. ICD10CM:E28.31 DOID:10787 MEDGEN:9963 ICD9:256.31 UMLS:C0025322 ICD9:256.39 EFO:0009005 SCTID:237788002 premature menopause MESH:D008594 NCIT:C80099 early menopause MONDO:0001119 POF primary ovarian failure