LOINCActive

LOINC Code 68999-2: Heart rate --supine

68999-2 is a LOINC code used to identify Heart rate --supine 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 Heart rate^supine. It is commonly used with the system or sample type Arterial system.

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 Heart rate^supine. It is commonly used with the system or sample type Arterial system.

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

What it does not mean

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

Key facts

  • Heart rate --supine
  • Heart rate^supine
  • Art sys; Count/time; Heart beat; HRTRATE.PSTN.MOLEC; Lying; nRate; Number rate; Number Rate = Count/Time; Point in time; Pulse; QNT; Quan; Quant; Quantitative; 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

Heart rate --supineHeart rate supHeart rate^supineHRTRATE.PSTN.MOLECHeart rate - supineNRatPt

Frequently asked questions

Code details

Code68999-2
SystemLOINC
Display nameHeart rate --supine
DescriptionHeart rate^supine
Short nameHeart rate sup
ComponentHeart rate^supine
PropertyNRat
TimingPt
System (specimen)Arterial system
ScaleQn
ClassHRTRATE.PSTN.MOLEC
Example unitsbeats/min
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.38
Last changed2.73

Consumer names

Heart rate - supine

Part names

Heart rate^supineNRatPtArterial systemQnNumber RatePoint 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.

LOINC Code 68999-2 | HealthAssure