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 86666-5: Location within lymph node LM Nom (Skin melanoma)

Name: LOINC Code 86666-5: Location within lymph node LM Nom (Skin melanoma)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:14.638Z

86666-5 is a LOINC code used to identify Location within lymph node LM Nom (Skin melanoma) 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 Location within lymph node. It is commonly used with the system or sample type Skin melanoma.

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 Location within lymph node. It is commonly used with the system or sample type Skin melanoma.

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: Microscopy.light

What it does not mean

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

Key facts

Location within lymph node [Anatomy] in Skin melanoma by Light microscopy
Location within lymph node
Anatomy; Dermatologic; Epidermis; Integument; LM; LN; Loc within LN; Micro; Micros; Microscopic; Nominal; PATH.HISTO; PATHOLOGY; Point in time; Random; Skn

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

Location within lymph node LM Nom (Skin melanoma)Location within lymph node [Anatomy] in Skin melanoma by Light microscopyLoc within LN Mel MicroLocation within lymph nodePATH.HISTOLocation within lymph node, Skin MelanomaAnat

Frequently asked questions

Code details

Code86666-5

SystemLOINC

Display nameLocation within lymph node LM Nom (Skin melanoma)

DescriptionLocation within lymph node

Short nameLoc within LN Mel Micro

ComponentLocation within lymph node

PropertyAnat

TimingPt

System (specimen)Skin melanoma

ScaleNom

MethodMicroscopy.light

ClassPATH.HISTO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.61

Last changed2.61

Consumer names

Location within lymph node, Skin Melanoma

Part names

Location within lymph nodeAnatPtSkin melanomaNomMicroscopy.lightAnatomyPoint in time (spot)Light microscopy

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.