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 31035-9: Date of other vaccinations given within 4 weeks prior to the date of vaccine causing adverse event

Name: LOINC Code 31035-9: Date of other vaccinations given within 4 weeks prior to the date of vaccine causing adverse event
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:17.663Z

31035-9 is a LOINC code used to identify Date of other vaccinations given within 4 weeks prior to the date of vaccine causing adverse event 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 Date of other vaccinations given within 4W prior to the date of vaccine causing adverse event. 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 Date of other vaccinations given within 4W prior to the date of vaccine causing adverse event. 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
Order vs observation: Observation

What it does not mean

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

Key facts

Date of other vaccinations given within 4 weeks prior to the date of vaccine causing adverse event
Date of other vaccinations given within 4W prior to the date of vaccine causing adverse event
AE; Date other vaccines given within 4W; Othr; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Date of other vaccinations given within 4 weeks prior to the date of vaccine causing adverse eventDate other vaccines given within 4WDate of other vaccinations given within 4W prior to the date of vaccine causing adverse eventVACCINDatePt^Patient

Frequently asked questions

Code details

Code31035-9

SystemLOINC

Display nameDate of other vaccinations given within 4 weeks prior to the date of vaccine causing adverse event

DescriptionDate of other vaccinations given within 4W prior to the date of vaccine causing adverse event

Short nameDate other vaccines given within 4W

ComponentDate of other vaccinations given within 4W prior to the date of vaccine causing adverse event

PropertyDate

TimingPt

System (specimen)^Patient

ScaleQn

ClassVACCIN

Example unitsMMDDYY

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.04

Last changed2.50

Part names

Date of other vaccinations given within 4W prior to the date of vaccine causing adverse eventDatePt^PatientQnDate of other vaccinations given within 4 weeks prior to the date of vaccine causing adverse eventPoint 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.