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 51717-7: Normoblasts Orthochromic/Cells Microscopy (Bld)

Name: LOINC Code 51717-7: Normoblasts Orthochromic/Cells Microscopy (Bld)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:35.013Z

51717-7 is a LOINC code used to identify Normoblasts Orthochromic/Cells Microscopy (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 Normoblasts.orthochromic/Cells. 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 Normoblasts.orthochromic/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
Method: Microscopy

What it does not mean

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

Key facts

Normoblasts Orthochromic/cells in Blood by Microscopy
Normoblasts.orthochromic/Cells
Blood; Cell; Cellularity; Erythroblast; Erythroblasts; HEMATOLOGY/CELL COUNTS; Immature erythrocytes; Late erythroblast; Metarubricyte; Micro; Micros; Microscopic; Normoblast; Number fraction; Ortho Normoblasts; Orthochromic erythroblast; Percent; 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

Normoblasts Orthochromic/Cells Microscopy (Bld)Normoblasts Orthochromic/cells in Blood by MicroscopyOrtho Normoblasts NFr Bld MicroNormoblasts.orthochromic/CellsHEM/BCNormoblasts orthochromic/cells, BloodNFr

Frequently asked questions

Code details

Code51717-7

SystemLOINC

Display nameNormoblasts Orthochromic/Cells Microscopy (Bld)

DescriptionNormoblasts.orthochromic/Cells

Short nameOrtho Normoblasts NFr Bld Micro

ComponentNormoblasts.orthochromic/Cells

PropertyNFr

TimingPt

System (specimen)Bld

ScaleQn

MethodMicroscopy

ClassHEM/BC

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.24

Last changed2.79

Consumer names

Normoblasts orthochromic/cells, Blood

Part names

Normoblasts.orthochromic/CellsNFrPtBldQnMicroscopyNumber 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.