A patient had an outpatient ERCP for extraction of a bile duct stone. The patient developed acute abdominal pain and was admitted to rule out post-ERCP pancreatitis. The impression is post-ERCP pancreatitis. How should the coder report this encounter?
A) Code only for outpatient ERCP
B) Code for post-ERCP pancreatitis only
C) Use a combination code for ERCP and post-ERCP pancreatitis
D) Code for both outpatient ERCP and post-ERCP pancreatitis