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.

LOINC

LOINC Code 65817-9: Reference values correction factor PhenX

Name: LOINC Code 65817-9: Reference values correction factor PhenX
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:45.458Z

65817-9 is a LOINC code used to identify Reference values correction factor PhenX 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 Reference values correction factor. 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 Reference values correction factor. 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: TRIAL
Method: PhenX

What it does not mean

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

Key facts

Reference values correction factor PhenX
Reference values correction factor
Cnt; Correctn; Count; Fac; Fact; Number; Point in time; QNT; Quan; Quant; Quantitative; Random; Ref values correction factor

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

Reference values correction factor PhenXRef values correction factor PhenXReference values correction factorPHENXNumPt^Patient

Frequently asked questions

Code details

Code65817-9

SystemLOINC

Display nameReference values correction factor PhenX

DescriptionReference values correction factor

Short nameRef values correction factor PhenX

ComponentReference values correction factor

PropertyNum

TimingPt

System (specimen)^Patient

ScaleQn

MethodPhenX

ClassPHENX

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.73

Part names

Reference values correction factorNumPt^PatientQnPhenXNumber (count)Point 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.