LOINC Code 91578-5: Probability of an event occurring
91578-5 is a LOINC code used to identify Probability of an event occurring in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Probability of an event occurring. It is commonly used with the system or sample type ^Event.
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 Probability of an event occurring. It is commonly used with the system or sample type ^Event.
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
- Probability of an event occurring
- The level of probability (e.g. very unlikely, unlikely, likely, highly likely, almost certain) that the event will occur or re-occur. An event that is very likely (almost certain) is one that will occur (or re-occur) in most circumstances when the activity is undertaken. An event that is very unlikely (rare) may happen only in exceptional circumstances when the activity is undertaken.
- Ordinal; Point in time; QL; Qual; Qualitative; Random; Risk; Screen; Survey; SURVEY.CDC
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
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.