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.

LOINCObservation

LOINC Code 81301-4: Variant outer start-end [# range]

Name: LOINC Code 81301-4: Variant outer start-end [# range]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:05.775Z

81301-4 is a LOINC code used to identify Variant outer start-end [# range] 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 Variant outer start-end. It is commonly used with the system or sample type ^Patient.

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 Variant outer start-end. It is commonly used with the system or sample type ^Patient.

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: TRIAL
Order vs observation: Observation

What it does not mean

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

Key facts

Structural variant outer start and end
Variant outer start-end
The genomic coordinates of the widest genomic range in which the variant might reside.
Molecular pathology; MOLPATH; Point in time; QNT; Quan; Quant; Quantitative; Random; Started

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

Variant outer start-end [# range]Structural variant outer start and endStruct var outer start-end NumRangeVariant outer start-endMOLPATHNumRangePt

Frequently asked questions

Code details

Code81301-4

SystemLOINC

Display nameVariant outer start-end [# range]

DescriptionVariant outer start-end

Short nameStruct var outer start-end NumRange

ComponentVariant outer start-end

PropertyNumRange

TimingPt

System (specimen)^Patient

ScaleQn

ClassMOLPATH

Example unitsrange

StatusTRIAL

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.56

Last changed2.68

Consumer names

Variant outer start-end

Part names

Variant outer start-endNumRangePt^PatientQnPoint 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.