Pt presented with abdomen pain typically at 4 am. USG showed cirrhotic changes in liver with deranged LFT, CBC normal hbsag neg HCV neg (both spot test), no h/o jaundice, no significant past history, non alcoholic. What is the possible diagnosis?

Pt has already visited Gastroenterologist, who has been suggested endoscopy. Is there any indication for upper GI scopy?