HealthAssure
HealthAssureGood Life
LOINCActiveObservation

LOINC Code 90223-9: Neutrophils.immature/Neutrophils.total (Bld) [Pure # fraction]

90223-9 is a LOINC code used to identify Neutrophils.immature/Neutrophils.total (Bld) [Pure # fraction] 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 Neutrophils.immature/Neutrophils.total. 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 Neutrophils.immature/Neutrophils.total. 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

Neutrophils.immature/Neutrophils.total [Pure number fraction] in Blood
Neutrophils.immature/Neutrophils.total
When evaluating newborns for sepsis, it has been found that the ratio of immature neutrophils to total neutrophils (I/T) in the peripheral blood can be a useful indicator. Several parameters are used to predict infection including a low white blood cell count (WBC), a low absolute neutrophil count (ANC), and a high immature neutrophil to total neutrophil count (I/T). Because of the expected variability of white blood cell counts in the first four hours after birth, it is recommended that the neutrophil count be done after the baby is four hours old. Low ANC indicate the highest risk for sepsis regardless of the I/T. High I/T levels only indicate a high likelihood of infection if the ANC is low. However, the effect of the I/T at various levels of ANC is less consistent. When the I/T is less than 0.15, the likelihood of infection is low regardless of the ANC.[PMID24503598]
Blood; HEMATOLOGY/CELL COUNTS; Imm; Immat; Neut; Neut.total; Neutr; Neutrophil; Number fraction; PMN; PNM; Point in time; QNT; Quan; Quant; Quantitative; Random; Tot; Totl; 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

Neutrophils.immature/Neutrophils.total (Bld) [Pure # fraction]Neutrophils.immature/Neutrophils.total [Pure number fraction] in BloodNeut.immature/Neut.total NFr.DF BldNeutrophils.immature/Neutrophils.totalHEM/BCNeutrophils.immature/Neutrophils.total, BloodNFr.DF

Frequently asked questions

Code details

Code90223-9
SystemLOINC
Display nameNeutrophils.immature/Neutrophils.total (Bld) [Pure # fraction]
DescriptionNeutrophils.immature/Neutrophils.total
Short nameNeut.immature/Neut.total NFr.DF Bld
ComponentNeutrophils.immature/Neutrophils.total
PropertyNFr.DF
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 released2.65
Last changed2.65

Consumer names

Neutrophils.immature/Neutrophils.total, Blood

Part names

Neutrophils.immature/Neutrophils.totalNFr.DFPtBldQnDecimal number 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.