A patient claim data processing system responds to and initiates clinical events and attains early accurate claim data during a patient healthcare encounter cycle to support prompt claim data validation and editing both for individual claim elements and for a completed claim to improve claim accuracy prior to claim submission to a payer. The system submits accurate claims to payers and receives remittance advice from payers and applies rules to the advice. A system processes financial data related to provision of healthcare to a patient in response to clinical events. The system includes an interface processor for receiving a message identifying an event and a related change in healthcare data concerning a patient and also includes a source of rules for determining characteristics associated with reimbursement for provision of an individual service to a patient. A rules processor initiates application of a rule derived from the rules source to process financial data concerning provision of the individual service to the patient in response to receiving the message identifying the event. A result processor initiates an action in response to a result derived by the application of the rule to process the financial data. The rules processor also validates the financial data complies with the rule.