So the description for CPT code 99457 states "time in a calendar month". Then under the description it also says (Report 99457 once each 30 days). Now this usually wont be any issue since we bill this code on the last day of the month anyways. However now Humana is requesting a refund for this code for the month of February since there is only 28 days in February and we billed it last on January 31st. I believe these should be calendar month like the description states and am going to try to fight this with them. Just wanted to see what other opinions are on this.