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 66810-3: How much does he or she understand the way you feel about things [MIDUS II]

Name: LOINC Code 66810-3: How much does he or she understand the way you feel about things [MIDUS II]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:46.213Z

66810-3 is a LOINC code used to identify How much does he or she understand the way you feel about things [MIDUS II] 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 How much does he or she understand the way you feel about things. 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 How much does he or she understand the way you feel about things. 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: MIDUS II

What it does not mean

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

Key facts

How much does he or she understand the way you feel about things [MIDUS II]
How much does he or she understand the way you feel about things
2; Finding; Findings; Ordinal; PhenX; Point in time; QL; Qual; Qualitative; Random; Screen; Spouse understand way you feel

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

How much does he or she understand the way you feel about things [MIDUS II]Spouse understand way you feel MIDUS IIHow much does he or she understand the way you feel about thingsPHENXFindPt^Patient

Frequently asked questions

Code details

Code66810-3

SystemLOINC

Display nameHow much does he or she understand the way you feel about things [MIDUS II]

DescriptionHow much does he or she understand the way you feel about things

Short nameSpouse understand way you feel MIDUS II

ComponentHow much does he or she understand the way you feel about things

PropertyFind

TimingPt

System (specimen)^Patient

ScaleOrd

MethodMIDUS II

ClassPHENX

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.65

Part names

How much does he or she understand the way you feel about thingsFindPt^PatientOrdMIDUS IIFindingPoint 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.