LOINCActiveObservation

LOINC Code 71740-5: Personnel Last (Family) name

71740-5 is a LOINC code used to identify Personnel Last (Family) name 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 Last name. It is commonly used with the system or sample type Personnel.

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 Last name. It is commonly used with the system or sample type Personnel.

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

  • Personnel Last (Family) name
  • Last name
  • The person's legal last name.
  • ADMIN; Nominal; Past; Person name; Point in time; 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

Personnel Last (Family) namePersonnel Last nameLast nameADMINPnPtPersonnel

Frequently asked questions

Code details

Code71740-5
SystemLOINC
Display namePersonnel Last (Family) name
DescriptionLast name
Short namePersonnel Last name
ComponentLast name
PropertyPn
TimingPt
System (specimen)Personnel
ScaleNom
ClassADMIN
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

Last namePnPtPersonnelNomLast (Family) namePerson namePoint 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.