The Total Billed Amount on the Monthly $ report should correlate with the ChiroTouch Classic (Server) Insurance Billings report. It should count any line item in the ledger that has been marked with a "B" during the specified time period (B =Billed). It includes charges that were billed during the specified time period to the primary policy. Secondary billings are not included.
Note: Some charges (such as personal injury) are not technically "billed" through ChiroTouch Classic (Server) and will not show up in the Total Billed Amount. See ChiroTouch Classic (Server) help article named "Move a charge from W (waiting) to B (billed) without actually billing" as a workaround to this issue.