LOINCObservation

LOINC Code 81300-6: Structural variant [Length]

81300-6 is a LOINC code used to identify Structural variant [Length] 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 Structural variant. 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 Structural variant. 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 [Length]
  • Structural variant
  • Length of the structural variant, which information may be ascertained in some but not all types of structural variants.
  • Length; Molecular pathology; MOLPATH; Point in time; QNT; Quan; Quant; Quantitative; Random; Struct var

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

Structural variant [Length]Struct var lenStructural variantMOLPATHLenPt^Patient

Frequently asked questions

Code details

Code81300-6
SystemLOINC
Display nameStructural variant [Length]
DescriptionStructural variant
Short nameStruct var len
ComponentStructural variant
PropertyLen
TimingPt
System (specimen)^Patient
ScaleQn
ClassMOLPATH
Example units#
StatusTRIAL
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.56

Consumer names

Structural variant

Part names

Structural variantLenPt^PatientQnLengthPoint 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.

LOINC Code 81300-6 | HealthAssure