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In 2014 question ID 6155, code 37241 is recommend for portal vein embolization, but in 2015, question ID 6336, code 37243 is recommended. I’m confused by what makes the questions different. Can you please confirm which is appropriate? Patient has hepatic cholangiocarcinoma. If portal vein embolization is being done prior to future hepatic resection but the report does not specifically state that it is done to shrink one side of the liver to cause hypertrophy of the opposite side of the liver, is it assumed that the embolization is done to shrink/kill (37243), or do we use 37241 if it only describes the procedure as embolization to prepare liver for planned hepatic resection?