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LOINC Code 76698-0: Patient identifier assigning authority

76698-0 is a LOINC code used to identify Patient identifier assigning authority 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 Identifier assigning authority. It is commonly used with the system or sample type ^Patient.

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 Identifier assigning authority. It is commonly used with the system or sample type ^Patient.

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: Both

What it does not mean

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

Key facts

Patient identifier assigning authority
Identifier assigning authority
The patient identifier assigning authority is the organization that assigned the patient identifier reported using [LOINC76435-7]. In HL7 v2 messages, the patient identifier is reported in PID-3.1 and the assigning authority in PID-3.4. Examples of patient identifiers are medical record number, driver's license number and Social Security number, and their corresponding assigning authorities are the appropriate healthcare facility, state motor vehicle administration and the Social Security Administration, respectively.
ADMIN; ADMIN.PATIENT; ADMIN.PATIENT.ID; ID assign auth; Ident; Identifier; Intradermal; Nominal; 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

Patient identifier assigning authorityPt ID assign authIdentifier assigning authorityADMIN.PATIENT.IDIDPt^Patient

Frequently asked questions

Code details

Code76698-0
SystemLOINC
Display namePatient identifier assigning authority
DescriptionIdentifier assigning authority
Short namePt ID assign auth
ComponentIdentifier assigning authority
PropertyID
TimingPt
System (specimen)^Patient
ScaleNom
ClassADMIN.PATIENT.ID
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.52
Last changed2.69

Part names

Identifier assigning authorityIDPt^PatientNomIdentifierPoint 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 76698-0 | HealthAssure