LOINCActiveObservation

LOINC Code 73740-3: Screening duration of Ear - left

73740-3 is a LOINC code used to identify Screening duration of Ear - left 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 Screening duration. It is commonly used with the system or sample type Ear.left.

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 Screening duration. It is commonly used with the system or sample type Ear.left.

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

What it does not mean

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

Key facts

  • Screening duration of Ear - left
  • Screening duration
  • The duration of screening [left ear] indicates the length of time taken to perform the left ear newborn hearing screen.
  • Asympt; Asymptomatic; Durat; Ear-L; H+P; H+P.PX; Hearing; L; LT; Otologic; P prime; Point in time; QNT; Quan; Quant; Quantitative; Random; Scn; Screen dur

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

Screening duration of Ear - leftScreen dur Ear-LScreening durationH&P.PXTimePtEar.left

Frequently asked questions

Code details

Code73740-3
SystemLOINC
Display nameScreening duration of Ear - left
DescriptionScreening duration
Short nameScreen dur Ear-L
ComponentScreening duration
PropertyTime
TimingPt
System (specimen)Ear.left
ScaleQn
ClassH&P.PX
Example unitsmin
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.44
Last changed2.52

Part names

Screening durationTimePtEar.leftQnTime (e.g. seconds)Point in time (spot)Ear Left

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 73740-3 | HealthAssure