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 98720-6: Spontaneous activity.positive sharp waves of Muscle on EMG

Name: LOINC Code 98720-6: Spontaneous activity.positive sharp waves of Muscle on EMG
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:31.431Z

98720-6 is a LOINC code used to identify Spontaneous activity.positive sharp waves 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 Spontaneous activity.positive sharp waves. 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 Spontaneous activity.positive sharp waves. 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

Spontaneous activity.positive sharp waves of Muscle on EMG

Spontaneous activity.positive sharp waves

Positive sharp waves occur when the needle tip damages a muscle fiber, which causes a spontaneous action potential to propagate up to the needle tip. These are similar to muscle fibrillation and also occur in acutely denervated fibers. [PMID15961866]

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

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

Spontaneous activity.positive sharp waves of Muscle on EMGSpont activity.PSWs Muscle EMGSpontaneous activity.positive sharp wavesNEUROFindPtMuscle

Frequently asked questions

Code details

Code98720-6

SystemLOINC

Display nameSpontaneous activity.positive sharp waves of Muscle on EMG

DescriptionSpontaneous activity.positive sharp waves

Short nameSpont activity.PSWs Muscle EMG

ComponentSpontaneous activity.positive sharp waves

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

Spontaneous activity.positive sharp wavesFindPtMuscleOrdEMGFindingPoint 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.