LOINCActiveObservation

LOINC Code 8630-6: Q wave depth lead

8630-6 is a LOINC code used to identify Q wave depth lead 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 Q wave depth.lead. It is commonly used with the system or sample type Heart.

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 Q wave depth.lead. It is commonly used with the system or sample type Heart.

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
  • Method: EKG

What it does not mean

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

Key facts

  • Q wave depth lead
  • Q wave depth.lead
  • Cardiac; Cardio; Cardiology; Dpth; ECG; EKG.MEASUREMENTS; Electrocardiogram; Electrocardiograph; Heart Disease; Hrt; Identity or presence; Nominal; Painter's colic; PB; Plumbism; Point in time; Q wave Dpth; Q wave Dpth Lead; 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

Q wave depth leadQ wave Dpth LeadQ wave depth.leadEKG.MEASPridPtHeart

Frequently asked questions

Code details

Code8630-6
SystemLOINC
Display nameQ wave depth lead
DescriptionQ wave depth.lead
Short nameQ wave Dpth Lead
ComponentQ wave depth.lead
PropertyPrid
TimingPt
System (specimen)Heart
ScaleNom
MethodEKG
ClassEKG.MEAS
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0h(3)
Last changed2.27

Part names

Q wave depth.leadPridPtHeartNomEKGPresence or IdentityPoint 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.

LOINC Code 8630-6 | HealthAssure