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.

LOINCActiveBoth

LOINC Code 76645-1: Cardiac stress test EKG study Type

Name: LOINC Code 76645-1: Cardiac stress test EKG study Type
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:57.646Z

76645-1 is a LOINC code used to identify Cardiac stress test EKG study Type 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 Stress test type. It is commonly used with the system or sample type Cardiac stress study.

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 Stress test type. It is commonly used with the system or sample type Cardiac stress study.

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: Both
Method: EKG

What it does not mean

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

Key facts

Cardiac stress test EKG study Type
Stress test type
CARD.RISK; Cardio; Cardiology; ECG; Electrocardiogram; Electrocardiograph; Heart Disease; Nominal; Point in time; Random; Typ

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

Cardiac stress test EKG study TypeStress test typeCARD.RISKTypePtCardiac stress studyNom

Frequently asked questions

Code details

Code76645-1

SystemLOINC

Display nameCardiac stress test EKG study Type

DescriptionStress test type

Short nameCardiac stress test EKG study Type

ComponentStress test type

PropertyType

TimingPt

System (specimen)Cardiac stress study

ScaleNom

MethodEKG

ClassCARD.RISK

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.52

Last changed2.52

Part names

Stress test typeTypePtCardiac stress studyNomEKGPoint in time (spot)Electrocardiogram (EKG)

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.