LOINCActiveObservation

LOINC Code 98728-9: Voluntary activity effort of Muscle on EMG

98728-9 is a LOINC code used to identify Voluntary activity effort 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 effort. 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 effort. 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 effort of Muscle on EMG
Voluntary activity effort
The amount of effort exerted by a patient during voluntary muscle activation measurement. [PMID15961866]
Activ; Actvty; Finding; Findings; Movements; Musc; Muscl; NEURO; Ordinal; Point in time; QL; Qual; Qualitative; Random; Screen; Volun activity effort

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 effort of Muscle on EMGVolun activity effort Muscle EMGVoluntary activity effortNEUROFindPtMuscle

Frequently asked questions

Code details

Code98728-9
SystemLOINC
Display nameVoluntary activity effort of Muscle on EMG
DescriptionVoluntary activity effort
Short nameVolun activity effort Muscle EMG
ComponentVoluntary activity effort
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 effortFindPtMuscleOrdEMGFindingPoint 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.