LOINCActiveObservation

LOINC Code 20259-8: Mean pressure gradient/Mean pressure gradient 2 by US.doppler calculated

20259-8 is a LOINC code used to identify Mean pressure gradient/Mean pressure gradient 2 by US.doppler calculated 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.mean.XXX/Pressure gradient 2.mean.XXX. 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.mean.XXX/Pressure gradient 2.mean.XXX. 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.doppler.calculated

What it does not mean

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

Key facts

  • Mean pressure gradient/Mean pressure gradient 2 by US.doppler calculated
  • Pressure gradient.mean.XXX/Pressure gradient 2.mean.XXX
  • Average; Avg; Calc; Calculation; CARD.US; Cardio; Cardiology; Circ; Circ sys; DOP; DUPLEX; Echography; Grad; Grad 2.mean; Heart Disease; II; Mean press grad; Mean press grad 2; Misc; Miscellaneous; Other; Point in time; Press grad; Press grad 2; Press Grad 2.mean; Press grad.mean; PressureRatio; 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/Mean pressure gradient 2 by US.doppler calculatedMean press grade/Mean press grade 2 DOPPressure gradient.mean.XXX/Pressure gradient 2.mean.XXXCARD.USPresRtoPtCirculatory system.XXX

Frequently asked questions

Code details

Code20259-8
SystemLOINC
Display nameMean pressure gradient/Mean pressure gradient 2 by US.doppler calculated
DescriptionPressure gradient.mean.XXX/Pressure gradient 2.mean.XXX
Short nameMean press grade/Mean press grade 2 DOP
ComponentPressure gradient.mean.XXX/Pressure gradient 2.mean.XXX
PropertyPresRto
TimingPt
System (specimen)Circulatory system.XXX
ScaleQn
MethodUS.doppler.calculated
ClassCARD.US
Example unitsratio;index
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.69

Part names

Pressure gradient.mean.XXX/Pressure gradient 2.mean.XXXPresRtoPtCirculatory system.XXXQnUS.doppler.calculatedPressure RatioPoint in time (spot)Circulatory system XXXUltrasound.doppler.calculated

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 20259-8 | HealthAssure