LOINCActiveObservation

LOINC Code 20363-8: Velocity slope by US

20363-8 is a LOINC code used to identify Velocity 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 Velocity slope. It is commonly used with the system or sample type Circulatory system.XXX.

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 Velocity slope. It is commonly used with the system or sample type Circulatory system.XXX.

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

  • Velocity slope by US
  • Velocity slope
  • CARD.US; Cardio; Cardiology; Circ; Circ sys; Echography; Heart Disease; Misc; Miscellaneous; Other; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Spec; To be specified in another part of the message; ULS; Ultrasound; Unspecified; Vel; Vel slope; Velocity; VSLP

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

Velocity slope by USVel slope USVelocity slopeCARD.USVelPtCirculatory system.XXX

Frequently asked questions

Code details

Code20363-8
SystemLOINC
Display nameVelocity slope by US
DescriptionVelocity slope
Short nameVel slope US
ComponentVelocity slope
PropertyVel
TimingPt
System (specimen)Circulatory system.XXX
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

Velocity slopeVelPtCirculatory system.XXXQnUSVelocity (distance/time)Point in time (spot)Circulatory system XXXUltrasound

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 20363-8 | HealthAssure