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 44645-0: Nuclear pleomorphism Nottingham (Breast tumor) [Score]

Name: LOINC Code 44645-0: Nuclear pleomorphism Nottingham (Breast tumor) [Score]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:30.172Z

44645-0 is a LOINC code used to identify Nuclear pleomorphism Nottingham (Breast tumor) [Score] 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 Nuclear pleomorphism. It is commonly used with the system or sample type Breast tumor.

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 Nuclear pleomorphism. It is commonly used with the system or sample type Breast tumor.

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: Nottingham

What it does not mean

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

Key facts

Nuclear pleomorphism in Breast tumor by Nottingham
Nuclear pleomorphism
Brst; BT; Cancer; Nuc; Nuc pleomorph; PATHOLOGY; PATHOLOGY PROTOCOLS; PATHOLOGY PROTOCOLS BREAST; Point in time; Random; Scale; Scre; SmQn; tumors; tumour; tumours

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

Nuclear pleomorphism Nottingham (Breast tumor) [Score]Nuclear pleomorphism in Breast tumor by NottinghamNuc pleomorph BT NottinghamNuclear pleomorphismPATH.PROTOCOLS.BRSTNuclear pleomorphism, Breast TumorScore

Frequently asked questions

Code details

Code44645-0

SystemLOINC

Display nameNuclear pleomorphism Nottingham (Breast tumor) [Score]

DescriptionNuclear pleomorphism

Short nameNuc pleomorph BT Nottingham

ComponentNuclear pleomorphism

PropertyScore

TimingPt

System (specimen)Breast tumor

ScaleSemiQn

MethodNottingham

ClassPATH.PROTOCOLS.BRST

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.75

Consumer names

Nuclear pleomorphism, Breast Tumor

Part names

Nuclear pleomorphismScorePtBreast tumorSemiQnNottinghamPoint in time (spot)

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.