LOINC Code 42558-7: Event description transfusion service MERSTH

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Event description.transfusion service. It is commonly used with the system or sample type ^Patient.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Method: Observed.MERSTH

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Event description transfusion service MERSTH
• Event description.transfusion service
• Event Desc transfusion service; Finding; Findings; Medical Event Reporting System-Total Health System; Nominal; Patient safety; Point in time; Random; Tx

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions