He is in obstructive jaundice and requires urgent attention. Since his CBD stones are big with dilated bile ducts, they too can be removed surgically along with gall bladder laparoscopically. This way ERCP can be avoided. Other option is to get ERCP done and next day gall bladder surgery should be done. It is definitely not advisable to do ERCP alone.
Next Steps
He requires quick work up to avoid infection in gall bladder and bile ducts. You may contact us Dr Ramen Goel, Hinduja Healthcare Khar, Mumbai for a consultation for assessment and advise.