ADT: Admit/discharge/transfer messages that anchor patient location and attending context for laboratory collections.
ORM: General order messages that may represent lab orders; mapping to the LIS dictionary is a joint laboratory–IT responsibility.
ORU: Observation result messages carrying structured results back to consuming systems.
ASTM: Common framing for point-to-point analyzer conversations, complementary to enterprise HL7 routes described on our ASTM analyzer interface page.
For API-oriented programs, see healthcare API platform considerations.
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