LOINCActiveObservation

LOINC Code 71738-9: Personnel Middle initial

71738-9 is a LOINC code used to identify Personnel Middle initial 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 Middle initial. 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 Middle initial. 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 Middle initial
  • Middle initial
  • The person's legal middle initial.
  • ADMIN; Nominal; 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 Middle initialMiddle initialADMINPnPtPersonnelNom

Frequently asked questions

Code details

Code71738-9
SystemLOINC
Display namePersonnel Middle initial
DescriptionMiddle initial
Short namePersonnel Middle initial
ComponentMiddle initial
PropertyPn
TimingPt
System (specimen)Personnel
ScaleNom
ClassADMIN
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.40
Last changed2.67

Part names

Middle initialPnPtPersonnelNomPerson 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.

LOINC Code 71738-9 | HealthAssure