LOINCActiveObservation

LOINC Code 30397-4: Hairy cells (Bld) [#/Vol]

30397-4 is a LOINC code used to identify Hairy cells (Bld) [#/Vol] 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 Hairy cells. It is commonly used with the system or sample type Bld.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Hairy 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

  • Hairy cells [#/volume] in Blood
  • Hairy cells
  • #; ABS; absolute; absolutes; Blood; Cell; Cellularity; Cnt; Count; Count/volume; CT; Hairy cell leukaemia; HEMATOLOGY/CELL COUNTS; Number concentration; Number Concentration (count/vol); 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

Hairy cells (Bld) [#/Vol]Hairy cells [#/volume] in BloodHairy Cells # BldHairy cellsHEM/BCHairy cells, BloodNCnc

Frequently asked questions

Code details

Code30397-4
SystemLOINC
Display nameHairy cells (Bld) [#/Vol]
DescriptionHairy cells
Short nameHairy Cells # Bld
ComponentHairy cells
PropertyNCnc
TimingPt
System (specimen)Bld
ScaleQn
ClassHEM/BC
Example units10*3/mm3
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.04
Last changed2.70

Consumer names

Hairy cells, Blood

Part names

Hairy cellsNCncPtBldQnNumber ConcentrationPoint 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 30397-4 | HealthAssure