What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 95933-8: Transpulmonary pressure gradient

Name: LOINC Code 95933-8: Transpulmonary pressure gradient
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:25.849Z

95933-8 is a LOINC code used to identify Transpulmonary pressure gradient 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 Transpulmonary pressure gradient. It is commonly used with the system or sample type Pulmonary artery.

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 Transpulmonary pressure gradient. It is commonly used with the system or sample type Pulmonary artery.

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: Calculated

What it does not mean

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

Key facts

Transpulmonary pressure gradient

Transpulmonary pressure gradient (TPG) is the difference between the mean pulmonary arterial pressure and left atrial pressure, which may be approximated by the pulmonary capillary wedge pressure; it can be used to identify intrinsic pulmonary vascular disease in left-heart conditions with correlated increased pulmonary venous pressure. [PMID22936712]

Art; Calc; Calculation; Grad; Lung; PA; Point in time; Press grad; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; Transpulm press grad

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

Transpulmonary pressure gradientTranspulm press gradPULMPressDiffPtPulmonary arteryQn

Frequently asked questions

Code details

Code95933-8

SystemLOINC

Display nameTranspulmonary pressure gradient

Short nameTranspulm press grad

ComponentTranspulmonary pressure gradient

PropertyPressDiff

TimingPt

System (specimen)Pulmonary artery

ScaleQn

MethodCalculated

ClassPULM

Example unitsmm Hg

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.69

Last changed2.69

Part names

Transpulmonary pressure gradientPressDiffPtPulmonary arteryQnCalculatedPressure DifferencePoint in time (spot)

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.