LOINCActiveBoth

LOINC Code 37235-9: MRA Circle of Willis

37235-9 is a LOINC code used to identify MRA Circle of Willis 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. It is commonly used with the system or sample type Head+Neck>Circle of Willis.

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. It is commonly used with the system or sample type Head+Neck>Circle of Willis.

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.angio

What it does not mean

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

Key facts

  • MRA Circle of Willis
  • Multisection
  • Ang; Angio; Angiography; Brain; Cardio; Cardiology; Cranial; Cranium; Document; Finding; Findings; Heart Disease; Imaging; Intracranial; Magnetic Resonance Angiographies; Magnetic resonance imaging; Mitral regurgitation maximum velocity; MR angiography; MRA; MRI; MRI.angio; Neuro; Neurology; Point in time; Rad; Radiology; Random; Skull

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

MRA Circle of WillisMultisectionRADFindPtHead+Neck>Circle of WillisDoc

Frequently asked questions

Code details

Code37235-9
SystemLOINC
Display nameMRA Circle of Willis
DescriptionMultisection
Short nameMRA Circle of Willis
ComponentMultisection
PropertyFind
TimingPt
System (specimen)Head+Neck>Circle of Willis
ScaleDoc
MethodMR.angio
ClassRAD
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.14
Last changed2.61

Part names

MultisectionFindPtHead+Neck>Circle of WillisDocMR.angioHeadNeckAngioCircle of WillisMRFindingPoint in time (spot)MR angiogram

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 37235-9 | HealthAssure