LOINCActiveObservation

LOINC Code 20257-2: Mean pressure gradient 2 by US+Calculated

20257-2 is a LOINC code used to identify Mean pressure gradient 2 by US+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 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+Calculated

What it does not mean

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

Key facts

  • Mean pressure gradient 2 by US+Calculated
  • Pressure gradient 2.mean
  • Average; Avg; Calc; Calculation; 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; US Calc

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 US+CalculatedPress Grad 2.mean US+CalcPressure gradient 2.meanCARD.USPressDiffPtCirculatory system.XXX

Frequently asked questions

Code details

Code20257-2
SystemLOINC
Display nameMean pressure gradient 2 by US+Calculated
DescriptionPressure gradient 2.mean
Short namePress Grad 2.mean US+Calc
ComponentPressure gradient 2.mean
PropertyPressDiff
TimingPt
System (specimen)Circulatory system.XXX
ScaleQn
MethodUS+Calculated
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.XXXQnUS+CalculatedPressure gradient 2 meanPressure DifferencePoint in time (spot)Circulatory system XXX

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 20257-2 | HealthAssure