To find the full catalog of NC standards, you can visit the CONOCER website or consult the ECE portal’s "Supported Standards" section.
While the internal ECE system is primarily used by medical staff, IMSS offers several digital gateways for patients to interact with their health data and manage their services: Description
While technical glitches (Java, browser compatibility, e.firma registration) can be frustrating, the solutions are well-documented. Invest the time to configure your digital tools correctly, and the ECE portal will provide you with the most reliable proof of social security contributions available in Mexico.