tci Part B Insider - 2012 Issue 27

Reader Question: Medicare Has No Love for Modifier 33

Question: Some of our payers deny claims with modifier 33 because they state the modifier is invalid. Can you explain this modifier to me and how we should be using it? Answer: Modifier 33 (Preventive services) was a late addition to CPT® 2012; you'll find it in the Appendix A but not inside the front cover with other common modifiers. The full descriptor reads as follows:When the primary purpose of the service is the delivery of an evidence based service in accordance with a US Preventive Services Task Force A or B rating in effect and other preventive services...

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