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 98643-0: Sensory nerve action potential amplitude Right medial antebrachial cutaneous nerve

Name: LOINC Code 98643-0: Sensory nerve action potential amplitude Right medial antebrachial cutaneous nerve
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:31.430Z

98643-0 is a LOINC code used to identify Sensory nerve action potential amplitude Right medial antebrachial cutaneous nerve 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 Sensory nerve action potential amplitude. It is commonly used with the system or sample type Medial antebrachial cutaneous nerve.right.

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 Sensory nerve action potential amplitude. It is commonly used with the system or sample type Medial antebrachial cutaneous nerve.right.

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: Nerve conduction

What it does not mean

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

Key facts

Sensory nerve action potential amplitude Right medial antebrachial cutaneous nerve
Sensory nerve action potential amplitude
Electrical potential; NEURO; Point in time; QNT; Quan; Quant; Quantitative; R; R MACN; Random; RT; SNAP amplitude; 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

Sensory nerve action potential amplitude Right medial antebrachial cutaneous nerveSNAP amplitude R MACNSensory nerve action potential amplitudeNEUROElpotPtMedial antebrachial cutaneous nerve.right

Frequently asked questions

Code details

Code98643-0

SystemLOINC

Display nameSensory nerve action potential amplitude Right medial antebrachial cutaneous nerve

DescriptionSensory nerve action potential amplitude

Short nameSNAP amplitude R MACN

ComponentSensory nerve action potential amplitude

PropertyElpot

TimingPt

System (specimen)Medial antebrachial cutaneous nerve.right

ScaleQn

MethodNerve conduction

ClassNEURO

Example unitsmV

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Part names

Sensory nerve action potential amplitudeElpotPtMedial antebrachial cutaneous nerve.rightQnNerve conductionElectrical Potential (Voltage)Point in time (spot)Right medial antebrachial cutaneous nerve

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.