LOINCActiveObservation

LOINC Code 17194-2: CD74 cells/Cells (Bld)

17194-2 is a LOINC code used to identify CD74 cells/Cells (Bld) 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 Cells.CD74/Cells. It is commonly used with the system or sample type Bld.

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 Cells.CD74/Cells. It is commonly used with the system or sample type Bld.

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

  • CD74 cells/cells in Blood
  • Cells.CD74/Cells
  • Blood; CD74 Cells; CD74 p33; CD74 p35; Cell; CELL MARKERS; Cellularity; Class II-specific chaperone; II; Invariant chain; Number fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; WB; Whole blood

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

CD74 cells/Cells (Bld)CD74 cells/cells in BloodCD74 Cells NFr BldCells.CD74/CellsCELLMARKCD74 cells/cells, BloodNFr

Frequently asked questions

Code details

Code17194-2
SystemLOINC
Display nameCD74 cells/Cells (Bld)
DescriptionCells.CD74/Cells
Short nameCD74 Cells NFr Bld
ComponentCells.CD74/Cells
PropertyNFr
TimingPt
System (specimen)Bld
ScaleQn
ClassCELLMARK
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.79

Consumer names

CD74 cells/cells, Blood

Part names

Cells.CD74/CellsNFrPtBldQnNumber FractionPoint in time (spot)Blood

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 17194-2 | HealthAssure