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.

LOINCActive

LOINC Code 19915-8: Diffusion capacity/Alveolar volume Predicted

Name: LOINC Code 19915-8: Diffusion capacity/Alveolar volume Predicted
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.199Z

19915-8 is a LOINC code used to identify Diffusion capacity/Alveolar volume Predicted 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 Diffusion capacity/Alveolar volume. It is commonly used with the system or sample type Respiratory system.

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 Diffusion capacity/Alveolar volume. It is commonly used with the system or sample type Respiratory system.

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
Method: Predicted

What it does not mean

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

Key facts

Diffusion capacity/Alveolar volume Predicted
Diffusion capacity/Alveolar volume
(Diff cap; ALV; Alv vol; Breathing; Diff cap; DL; Lung; Lungs; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; RS; VA; Vol

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

Diffusion capacity/Alveolar volume PredictedDiff cap/Alv vol PredictedDiffusion capacity/Alveolar volumePULMInverse VIPtRespiratory system

Frequently asked questions

Code details

Code19915-8

SystemLOINC

Display nameDiffusion capacity/Alveolar volume Predicted

DescriptionDiffusion capacity/Alveolar volume

Short nameDiff cap/Alv vol Predicted

ComponentDiffusion capacity/Alveolar volume

PropertyInverse VI

TimingPt

System (specimen)Respiratory system

ScaleQn

MethodPredicted

ClassPULM

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.27

Part names

Diffusion capacity/Alveolar volumeInverse VIPtRespiratory systemQnPredictedPoint 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.