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.

LOINCActiveBoth

LOINC Code 105166-3: Functional MR Brain WO contrast

Name: LOINC Code 105166-3: Functional MR Brain WO contrast
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:19.133Z

105166-3 is a LOINC code used to identify Functional MR Brain WO contrast 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 Multisection^WO contrast. It is commonly used with the system or sample type Head>Brain.

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 Multisection^WO contrast. It is commonly used with the system or sample type Head>Brain.

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: Both
Method: MR.functional

What it does not mean

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

Key facts

Functional MR Brain WO contrast
Multisection^WO contrast
Brain; c; Cerebral; Cerebrum; Contr; Contra; Contrst; Cranial; Cranium; Document; Finding; Findings; fMR; fMRI; Functional MRI; Head; Imaging; Intracranial; Mitral regurgitation maximum velocity; MRI; MRI.function; Point in time; Radiology; Random; Skull; without contrast

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

Functional MR Brain WO contrastfMR Brain WO contrMultisection^WO contrastRADFindPtHead>Brain

Frequently asked questions

Code details

Code105166-3

SystemLOINC

Display nameFunctional MR Brain WO contrast

DescriptionMultisection^WO contrast

Short namefMR Brain WO contr

ComponentMultisection^WO contrast

PropertyFind

TimingPt

System (specimen)Head>Brain

ScaleDoc

MethodMR.functional

ClassRAD

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.78

Last changed2.78

Part names

Multisection^WO contrastFindPtHead>BrainDocMR.functionalHeadContrastWOMRFunctionalBrainFindingPoint in time (spot)Functional MR

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.