LOINC Code 18800-3: Send the worst abnormal result for each kind of observation in the time window

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 Send the worst abnormal result for each kind of observation in the time window. It is commonly used with the system or sample type X12^277.

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: DISCOURAGED

What it does not mean

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

Key facts

• Send the worst abnormal result for each kind of observation in the time window
• Indicates sending the worst abnormal result for each kind of observation in the time window (e.g., if the request is for serology results, send the first of each kind of serology result within the time window, but do not send the results of subsequent repetitions of the same tests).
• abn; abnorm; ATTACH; ATTACH.MODIFIER; Point in time; Random

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