LOINCActiveObservation

LOINC Code 104099-7: ICU admission ID

104099-7 is a LOINC code used to identify ICU admission ID 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 ICU admission ID. 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 ICU admission ID. 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: Observation

What it does not mean

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

Key facts

  • ICU admission ID
  • ADMIN; ADMIN.PATIENT; ADMIN.PATIENT.ID; 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

ICU admission IDADMIN.PATIENT.IDIDPt^PatientNomIdentifier

Frequently asked questions

Code details

Code104099-7
SystemLOINC
Display nameICU admission ID
Short nameICU admission ID
ComponentICU admission ID
PropertyID
TimingPt
System (specimen)^Patient
ScaleNom
ClassADMIN.PATIENT.ID
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.77
Last changed2.77

Part names

ICU admission IDIDPt^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 104099-7 | HealthAssure