LOINC Code 91100-8: People with confirmed positive lab results [#] Population

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 People with confirmed positive lab results. It is commonly used with the system or sample type ^Population.

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
• Order vs observation: Observation

What it does not mean

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

Key facts

• People with confirmed positive lab results [#] Population
• People with confirmed positive lab results
• The total number of people in a defined population that have a confirmed positive diagnosis, typically based on laboratory tests.
• Cnt; Count; Number; Point in time; Pos; Public Health; PUBLICHEALTH; QNT; Quan; Quant; Quantitative; 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