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 99351-9: Informed of being at severe risk from COVID-19 due to an underlying health condition

Name: LOINC Code 99351-9: Informed of being at severe risk from COVID-19 due to an underlying health condition
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:33.064Z

99351-9 is a LOINC code used to identify Informed of being at severe risk from COVID-19 due to an underlying health condition 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 Informed of being at severe risk from COVID-19 due to an underlying health condition. 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 Informed of being at severe risk from COVID-19 due to an underlying health condition. 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

Informed of being at severe risk from COVID-19 due to an underlying health condition
2019 Novel Coronavirus; 2019-nCoV; Coronavirus disease 2019; COVID19; Finding; Findings; Ordinal; Point in time; QL; Qual; Qualitative; Random; SARS Coronavirus; SARS-CoV-2; SARS-Related Coronavirus; Screen; Sev risk C-19 b/c underlying hlth cond; Survey

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

Informed of being at severe risk from COVID-19 due to an underlying health conditionSURVEY.COVIDFindPt^PatientOrdFinding

Frequently asked questions

Code details

Code99351-9

SystemLOINC

Display nameInformed of being at severe risk from COVID-19 due to an underlying health condition

ComponentInformed of being at severe risk from COVID-19 due to an underlying health condition

PropertyFind

TimingPt

System (specimen)^Patient

ScaleOrd

ClassSURVEY.COVID

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Part names

Informed of being at severe risk from COVID-19 due to an underlying health conditionFindPt^PatientOrdFindingPoint 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.