What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 99678-5: Pacemaker Atrial sensitivity threshold

Name: LOINC Code 99678-5: Pacemaker Atrial sensitivity threshold
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:33.065Z

99678-5 is a LOINC code used to identify Pacemaker Atrial sensitivity threshold 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 Atrial sensitivity threshold. It is commonly used with the system or sample type Pacemaker.

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 Atrial sensitivity threshold. It is commonly used with the system or sample type Pacemaker.

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

Pacemaker Atrial sensitivity threshold
Atrial sensitivity threshold
Cardiac pacemaker; Device, Heart-Assist; Electrical potential; Point in time; Prosthetic; QNT; Quan; Quant; Quantitative; Random; Voltage

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

Pacemaker Atrial sensitivity thresholdAtrial sensitivity thresholdDEVICESElpotPtPacemakerQn

Frequently asked questions

Code details

Code99678-5

SystemLOINC

Display namePacemaker Atrial sensitivity threshold

DescriptionAtrial sensitivity threshold

Short namePacemaker Atrial sensitivity threshold

ComponentAtrial sensitivity threshold

PropertyElpot

TimingPt

System (specimen)Pacemaker

ScaleQn

ClassDEVICES

Example unitsmV

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Part names

Atrial sensitivity thresholdElpotPtPacemakerQnElectrical Potential (Voltage)Point 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.