LOINCActiveObservation

LOINC Code 71583-9: Service requested of EMS unit

71583-9 is a LOINC code used to identify Service requested of EMS unit 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 Service requested. It is commonly used with the system or sample type EMS unit.

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 Service requested. It is commonly used with the system or sample type EMS unit.

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

  • Service requested of EMS unit
  • Service requested
  • The type of service or category of service requested of the EMS unit responding for this specific EMS event.
  • Emergency Medical Service(s); Nominal; Point in time; Random; TRAUMA; 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

Service requested of EMS unitService requested of EMSService requestedTRAUMATypePtEMS unit

Frequently asked questions

Code details

Code71583-9
SystemLOINC
Display nameService requested of EMS unit
DescriptionService requested
Short nameService requested of EMS
ComponentService requested
PropertyType
TimingPt
System (specimen)EMS unit
ScaleNom
ClassTRAUMA
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.40
Last changed2.70

Part names

Service requestedTypePtEMS unitNomPoint 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 71583-9 | HealthAssure