The charge amount on a session is the amount that you are charging for that specific CPT code. This is the amount that will go on the CMS-1500 claim form in Box 24f.
The amount I'm paid depends on the insurance company I'm billing. Should I charge different amounts based on the client's insurance?
No, you should not. The charge amount should be consistent for each CPT code across all payers. For more information on how to populate charge amounts quickly, please see: CPT Fee Schedule.
You can also use Expected Rates to allow for more accurate A/R reporting.