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 63811-4: During the last 48 hours, the study period, was there any diesel vehicles parked around the house [RIOPA]

Name: LOINC Code 63811-4: During the last 48 hours, the study period, was there any diesel vehicles parked around the house [RIOPA]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:43.946Z

63811-4 is a LOINC code used to identify During the last 48 hours, the study period, was there any diesel vehicles parked around the house [RIOPA] 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 During the last 48H, the study period, was there any diesel vehicles parked around the house. It is commonly used with the system or sample type ^Patient.

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 During the last 48H, the study period, was there any diesel vehicles parked around the house. It is commonly used with the system or sample type ^Patient.

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: RIOPA

What it does not mean

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

Key facts

During the last 48 hours, the study period, was there any diesel vehicles parked around the house [RIOPA]
During the last 48H, the study period, was there any diesel vehicles parked around the house
2 days; 2D; 48 hours; 48HR; Finding; Findings; Ordinal; Park diesel vehicle; Past; PhenX; Ql; Qual; Qualitative; Screen; Study report

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

During the last 48 hours, the study period, was there any diesel vehicles parked around the house [RIOPA]Park diesel vehicle RIOPADuring the last 48H, the study period, was there any diesel vehicles parked around the housePHENXFind48H^Patient

Frequently asked questions

Code details

Code63811-4

SystemLOINC

Display nameDuring the last 48 hours, the study period, was there any diesel vehicles parked around the house [RIOPA]

DescriptionDuring the last 48H, the study period, was there any diesel vehicles parked around the house

Short namePark diesel vehicle RIOPA

ComponentDuring the last 48H, the study period, was there any diesel vehicles parked around the house

PropertyFind

Timing48H

System (specimen)^Patient

ScaleOrd

MethodRIOPA

ClassPHENX

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

During the last 48H, the study period, was there any diesel vehicles parked around the houseFind48H^PatientOrdRIOPADuring the last 48 hours, the study period, was there any diesel vehicles parked around the houseFinding48 hours

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.