Consider admission for:
Bilirubin > 20
PT 50% above normal
Hypoglycemia
Hypoalbuminemia
Any GI bleeding
Acute hepatitis
Gallbladder disease
Acute alcoholic hepatitis
Symptomatic cholelithiasis 
Ischemic hepatitis
Choledocholithiasis
Symptomatic cholelithiasis
Acute cholecystitis