LOINCActiveObservation

LOINC Code 20258-0: Mean pressure gradient 2 by US

20258-0 is a LOINC code used to identify Mean pressure gradient 2 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 Pressure gradient 2.mean. 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 Pressure gradient 2.mean. 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

  • Mean pressure gradient 2 by US
  • Pressure gradient 2.mean
  • Average; Avg; CARD.US; Cardio; Cardiology; Circ; Circ sys; Echography; Grad; Heart Disease; II; Mean press grad 2; Misc; Miscellaneous; Other; Point in time; Press grad; Press grad 2; Press Grad 2.mean; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Spec; To be specified in another part of the message; ULS; Ultrasound; Unspecified

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

Mean pressure gradient 2 by USPress Grad 2.mean USPressure gradient 2.meanCARD.USPressDiffPtCirculatory system.XXX

Frequently asked questions

Code details

Code20258-0
SystemLOINC
Display nameMean pressure gradient 2 by US
DescriptionPressure gradient 2.mean
Short namePress Grad 2.mean US
ComponentPressure gradient 2.mean
PropertyPressDiff
TimingPt
System (specimen)Circulatory system.XXX
ScaleQn
MethodUS
ClassCARD.US
Example unitsmm Hg
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.67

Part names

Pressure gradient 2.meanPressDiffPtCirculatory system.XXXQnUSPressure gradient 2 meanPressure DifferencePoint 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 20258-0 | HealthAssure