What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 58355-9: Plasma cells immature (Bld) [#/Vol]

Name: LOINC Code 58355-9: Plasma cells immature (Bld) [#/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

58355-9 is a LOINC code used to identify Plasma cells immature (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 Plasma cells.immature. 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 Plasma cells.immature. 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

Plasma cells immature [#/volume] in Blood
Plasma cells.immature
#; ABS; absolute; absolutes; Blood; Cell; Cellularity; Cnt; Count; Count/volume; CT; HEMATOLOGY/CELL COUNTS; Imm; Imm Plasma Cells; Immat; Myeloma cells; Number concentration; Number Concentration (count/vol); Plasmacyte; Plasmacytes; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Plasma cells immature (Bld) [#/Vol] (58355-9)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Plasma cells immature (Bld) [#/Vol]Plasma cells immature [#/volume] in BloodImm Plasma Cells # BldPlasma cells.immatureHEM/BCPlasma cells immature, BloodNCnc

Frequently asked questions

Code details

Code58355-9

SystemLOINC

Display namePlasma cells immature (Bld) [#/Vol]

DescriptionPlasma cells.immature

Short nameImm Plasma Cells # Bld

ComponentPlasma cells.immature

PropertyNCnc

TimingPt

System (specimen)Bld

ScaleQn

ClassHEM/BC

Example units10*3/uL

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.30

Last changed2.40

Consumer names

Plasma cells immature, Blood

Part names

Plasma cells.immatureNCncPtBldQnPlasma cells immatureNumber 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.