LOINCActive

LOINC Code 11291-2: Respiratory rate at First encounter

11291-2 is a LOINC code used to identify Respiratory rate at First encounter 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 Breaths. It is commonly used with the system or sample type Respiratory 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 Breaths. It is commonly used with the system or sample type Respiratory 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

  • Respiratory rate at First encounter
  • Breaths
  • 1st; Breathing; Count/time; Encounter; Lungs; nRate; Number rate; Number Rate = Count/Time; QNT; Quan; Quant; Quantitative; RESP.TIMED.MOLEC; Respiratory rate; RS

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

Respiratory rate at First encounterResp rate 1st enctrBreathsRESP.TIMED.MOLECNRatEnctr^frstRespiratory system

Frequently asked questions

Code details

Code11291-2
SystemLOINC
Display nameRespiratory rate at First encounter
DescriptionBreaths
Short nameResp rate 1st enctr
ComponentBreaths
PropertyNRat
TimingEnctr^frst
System (specimen)Respiratory system
ScaleQn
ClassRESP.TIMED.MOLEC
Example unitsbreaths/min
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.44

Part names

BreathsNRatEnctr^frstRespiratory systemQnNumber Rate

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 11291-2 | HealthAssure