Accounts receivable (A/R) refers to the money that you are yet to receive from your client(s) for the services you have billed or rendered. The list of clients who owe you money may include patients and insurance payers. Accounts Receivable report contains an aggregate amount of all unpaid invoices and overdue amounts of your customers. This report helps you track all your customer's outstanding balances including the overdue amount that your customers should settle immediately.