LOINCActiveObservation

LOINC Code 18014-1: Aorta isthmus Diameter by US

18014-1 is a LOINC code used to identify Aorta isthmus Diameter by US 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.isthmus.

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.isthmus.

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: US

What it does not mean

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

Key facts

  • Aorta isthmus Diameter by US
  • Diameter
  • AO; Aortic; CARD.US; Cardio; Cardiology; DIA; Diam; Echography; Heart Disease; Length; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound

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 isthmus Diameter by USAorta.isthmus Diam USDiameterCARD.USLenPtAorta.isthmus

Frequently asked questions

Code details

Code18014-1
SystemLOINC
Display nameAorta isthmus Diameter by US
DescriptionDiameter
Short nameAorta.isthmus Diam US
ComponentDiameter
PropertyLen
TimingPt
System (specimen)Aorta.isthmus
ScaleQn
MethodUS
ClassCARD.US
Example unitscm
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.48

Part names

DiameterLenPtAorta.isthmusQnUSLengthPoint in time (spot)Aorta isthmusUltrasound

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 18014-1 | HealthAssure