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 98723-0: Voluntary activity.amplitude of Muscle on EMG

Name: LOINC Code 98723-0: Voluntary activity.amplitude of Muscle on EMG
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:31.431Z

98723-0 is a LOINC code used to identify Voluntary activity.amplitude of Muscle on EMG 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 Voluntary activity.amplitude. It is commonly used with the system or sample type Muscle.

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 Voluntary activity.amplitude. It is commonly used with the system or sample type Muscle.

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
Method: EMG

What it does not mean

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

Key facts

Voluntary activity.amplitude of Muscle on EMG

Voluntary activity.amplitude

The amplitude of muscle electrical activity during voluntary muscle activation. Different levels of activation (e.g., minimal versus maximal) result in varying amplitudes. Normal amplitude is typically less than 2 mV. [PMID15961866]

Activ; Actvty; Finding; Findings; Movements; Musc; Muscl; NEURO; Ordinal; Point in time; QL; Qual; Qualitative; Random; Screen; Volun activity.amplitude

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

Voluntary activity.amplitude of Muscle on EMGVolun activity.amplitude Muscle EMGVoluntary activity.amplitudeNEUROFindPtMuscle

Frequently asked questions

Code details

Code98723-0

SystemLOINC

Display nameVoluntary activity.amplitude of Muscle on EMG

DescriptionVoluntary activity.amplitude

Short nameVolun activity.amplitude Muscle EMG

ComponentVoluntary activity.amplitude

PropertyFind

TimingPt

System (specimen)Muscle

ScaleOrd

MethodEMG

ClassNEURO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Part names

Voluntary activity.amplitudeFindPtMuscleOrdEMGFindingPoint 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.