Guidelines for Event audits
All events (claim request created, claim forwarded, data requested, authorisation, payment, etc) in the claims flow and corresponding system requests and responses between Provider TMS/Beneficiary apps, HCPs, and Payer TMS must be digitally signed and logged to ensure immutability, non-tamperability, and non-repudiability.
The HCX needs to persist the logs for a configurable (as prescribed by the law of the land) period of time so that they can be retrieved when necessary and this audit trail must be made transparently available to the customer. To ensure integrity, logs should be append-only and should not be allowed to be edited.
This section proposes a high-level approach that can be adopted for event audit policies for an HCX ecosystem. More deliberation is needed to arrive at model policies that can then be readily extended to be adopted by the ecosystem. Domain working groups will continue to work on developing a detailed approach for event audit policy formulation as well as a model policy for easy adoption.