LOINCActiveObservation

LOINC Code 35058-7: Hairy cells/Leukocytes (Bld)

35058-7 is a LOINC code used to identify Hairy cells/Leukocytes (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 Hairy cells/Leukocytes. 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/Leukocytes. 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/Leukocytes in Blood
  • Hairy cells/Leukocytes
  • Blood; Cell; Cellularity; Hairy cell leukaemia; HEMATOLOGY/CELL COUNTS; Leuc; Leuk; Leukocyte; Lkcs; Number fraction; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; WB; WBC; WBCs; White blood cell; White blood cells; 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/Leukocytes (Bld)Hairy cells/Leukocytes in BloodHairy Cells NFr BldHairy cells/LeukocytesHEM/BCHairy cells/White Blood Cells, BloodNFr

Frequently asked questions

Code details

Code35058-7
SystemLOINC
Display nameHairy cells/Leukocytes (Bld)
DescriptionHairy cells/Leukocytes
Short nameHairy Cells NFr Bld
ComponentHairy cells/Leukocytes
PropertyNFr
TimingPt
System (specimen)Bld
ScaleQn
ClassHEM/BC
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.11
Last changed2.79

Consumer names

Hairy cells/White Blood Cells, Blood

Part names

Hairy cells/LeukocytesNFrPtBldQnNumber 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 35058-7 | HealthAssure