LOINCActiveObservation

LOINC Code 20174-9: Aortic valve Acceleration slope by US

20174-9 is a LOINC code used to identify Aortic valve Acceleration slope 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 Acceleration slope. It is commonly used with the system or sample type Aortic valve.

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 Acceleration slope. It is commonly used with the system or sample type Aortic valve.

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

  • Aortic valve Acceleration slope by US
  • Acceleration slope
  • Acc; Accel; Accel slope; ACCT1; AO; AoV; AV; CARD.US; Cardio; Cardiology; Echography; Heart Disease; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Velocity

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

Aortic valve Acceleration slope by USAV Accel slope USAcceleration slopeCARD.USVelPtAortic valve

Frequently asked questions

Code details

Code20174-9
SystemLOINC
Display nameAortic valve Acceleration slope by US
DescriptionAcceleration slope
Short nameAV Accel slope US
ComponentAcceleration slope
PropertyVel
TimingPt
System (specimen)Aortic valve
ScaleQn
MethodUS
ClassCARD.US
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.27

Part names

Acceleration slopeVelPtAortic valveQnUSVelocity (distance/time)Point in time (spot)Ultrasound

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 20174-9 | HealthAssure