LOINCActiveObservation

LOINC Code 106770-1: Aorta root Diameter by MR

106770-1 is a LOINC code used to identify Aorta root Diameter by MR 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 Diameter. It is commonly used with the system or sample type Aorta.root.

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 Diameter. It is commonly used with the system or sample type Aorta.root.

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: MR

What it does not mean

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

Key facts

  • Aorta root Diameter by MR
  • Diameter
  • AO; AO root; Aortic; CARD.US; Cardiology; DIA; Diam; Length; Mitral regurgitation maximum velocity; MRI; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Aorta root Diameter by MRAO root Diam MRDiameterCARD.USLenPtAorta.root

Frequently asked questions

Code details

Code106770-1
SystemLOINC
Display nameAorta root Diameter by MR
DescriptionDiameter
Short nameAO root Diam MR
ComponentDiameter
PropertyLen
TimingPt
System (specimen)Aorta.root
ScaleQn
MethodMR
ClassCARD.US
Example unitsCM, MM
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.81
Last changed2.81

Part names

DiameterLenPtAorta.rootQnMRLengthPoint in time (spot)Aorta rootMagnetic resonance

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 106770-1 | HealthAssure