LOINCActive

LOINC Code 18600-7: Primary practitioner identifier

18600-7 is a LOINC code used to identify Primary practitioner identifier 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 Primary practitioner ID. It is commonly used with the system or sample type Provider.

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 Primary practitioner ID. It is commonly used with the system or sample type Provider.

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

What it does not mean

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

Key facts

  • Primary practitioner identifier
  • Primary practitioner ID
  • NPI ID number and name of physician
  • ATTACH; Ident; Identifier; Intradermal; Nominal; Point in time; Primary pract ID; 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

Primary practitioner identifierPrimary practitioner IDATTACHIDPtProviderNom

Frequently asked questions

Code details

Code18600-7
SystemLOINC
Display namePrimary practitioner identifier
DescriptionPrimary practitioner ID
ComponentPrimary practitioner ID
PropertyID
TimingPt
System (specimen)Provider
ScaleNom
ClassATTACH
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.56

Part names

Primary practitioner IDIDPtProviderNomPrimary practitioner identifierIdentifierPoint 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 18600-7 | HealthAssure