When DrChrono receives ERA/835 files, they post automatically to patient appointments after the system verifies that the patient and the transaction match, unless you have your account to verify ERAs before posting. When there is a conflict (ex: patient not found or charges do not match) the system places the posting under Unposted ERAs. (Billing > Unposted ERAs)
Before you freeze transactions for the first time, you will need to either match the unmatched transactions to an existing appointment or delete them. This will ensure that the logic behind the month-end close frozen transaction date and the consistency of your financial reports is kept intact.
If you have any questions, please reach out to support or your account manager for assistance.