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LOINC Code 40548-0: Mononuclear cells atypical Manual cnt (Bld) [#/Vol]

40548-0 is a LOINC code used to identify Mononuclear cells atypical Manual cnt (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 Mononuclear cells.atypical. 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 Mononuclear cells.atypical. 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
  • Method: Manual count

What it does not mean

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

Key facts

  • Mononuclear cells atypical [#/volume] in Blood by Manual count
  • Mononuclear cells.atypical
  • #; ABS; absolute; absolutes; Atyp; Atypical Mononuc; Blood; Cell; Cellularity; Cnt; Count; Count/volume; CT; HEMATOLOGY/CELL COUNTS; Manl; Mononuc; Mononuc Cells; Number concentration; Number Concentration (count/vol); Point in time; QNT; Quan; Quant; Quantitative; Random; Reactive; 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

Mononuclear cells atypical Manual cnt (Bld) [#/Vol]Mononuclear cells atypical [#/volume] in Blood by Manual countAtypical Mononuc # Bld ManualMononuclear cells.atypicalHEM/BCMononuclear cells atypical, BloodNCnc

Frequently asked questions

Code details

Code40548-0
SystemLOINC
Display nameMononuclear cells atypical Manual cnt (Bld) [#/Vol]
DescriptionMononuclear cells.atypical
Short nameAtypical Mononuc # Bld Manual
ComponentMononuclear cells.atypical
PropertyNCnc
TimingPt
System (specimen)Bld
ScaleQn
MethodManual count
ClassHEM/BC
Example units10*9/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.73

Consumer names

Mononuclear cells atypical, Blood

Part names

Mononuclear cells.atypicalNCncPtBldQnManual countMononuclear cells atypicalNumber 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 40548-0 | HealthAssure