Why do I need to submit Average Manufacturers Price (AMP) data on certain NDCs?
Only those labelers who have agreed to pay California a state supplemental rebate based on AMP need to provide AMP data. Because your labeler signed one or more AMP-based supplemental rebate contract(s) for certain NDC(s), you must send AMP data updates quarterly to California. Medi-Cal uses the AMP to calculate the supplemental rebate due.