LOINCActiveObservation

LOINC Code 105489-9: Percentage blockage with highest chance of a heart attack

105489-9 is a LOINC code used to identify Percentage blockage with highest chance of a heart attack 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 Percentage blockage with highest chance of a heart attack. It is commonly used with the system or sample type ^Patient.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

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 Percentage blockage with highest chance of a heart attack. 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
  • Order vs observation: Observation

What it does not mean

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

Key facts

  • Percentage blockage with highest chance of a heart attack
  • Finding; Findings; Ordinal; Percent block w high chance heart attack; PhenX; Point in time; QL; Qual; Qualitative; Random; Screen

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

Percentage blockage with highest chance of a heart attackPercent block w high chance heart attackPHENXFindPt^PatientOrd

Frequently asked questions

Code details

Code105489-9
SystemLOINC
Display namePercentage blockage with highest chance of a heart attack
Short namePercent block w high chance heart attack
ComponentPercentage blockage with highest chance of a heart attack
PropertyFind
TimingPt
System (specimen)^Patient
ScaleOrd
ClassPHENX
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.78
Last changed2.78

Part names

Percentage blockage with highest chance of a heart attackFindPt^PatientOrdFindingPoint in time (spot)

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.