Specifies the conformance requirements for ISO/IEC 18013-5 mobile document (mdoc) syntax used in myHealth for EUDI Wallet-based health credential presentation. The mdoc format defines a CBOR-encoded, cryptographically signed credential structure that supports selective disclosure of individual data elements. In the myHealth context, it enables patients to present health credentials (e.g. vaccination records, prescription authorisations) from their EUDI Wallet to healthcare providers without revealing unnecessary personal data.