LOINC represents the Logical Observation Identifiers Names and Codes (LOINC) terminology standard within MyHealth@MyHands. LOINC provides a universal code system for identifying health measurements, observations, and documents. It is primarily used for laboratory test result coding , vital signs, clinical document types, and diagnostic imaging reports. LOINC is mandated for laboratory data coding in EEHRxF-compliant exchanges within MyHealth@EU.