<unk>  refers to the condition where levels of bilirubin are elevated, for reasons that can be attributed to a metabolic disorder.
An example is Crigler-Najjar syndrome.
Hereditary hyperbilirubinemia
Benign intrahepatic cholestasis
Congenital hepatic fibrosis
Progressive familial intrahepatic cholestasis
Intrahepatic cholestasis of pregnancy
Posthepatic jaundice
Dubin-Johnson syndrome
Trimethylaminuria