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 44636-9: Invasive component size additional dimension 1 (Breast tumor) [Length]

Name: LOINC Code 44636-9: Invasive component size additional dimension 1 (Breast tumor) [Length]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:30.172Z

44636-9 is a LOINC code used to identify Invasive component size additional dimension 1 (Breast tumor) [Length] 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 Invasive component size.additional dimension 1. 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 Invasive component size.additional dimension 1. 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

What it does not mean

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

Key facts

Invasive component size additional dimension 1 [Length] in Breast tumor
Invasive component size.additional dimension 1
Add; Brst; BT; Cancer; i; Inv comp size addl dim 1; Length; PATH.HISTO; PATHOLOGY; Point in time; QNT; Quan; Quant; Quantitative; Random; Size addl dim; 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

Invasive component size additional dimension 1 (Breast tumor) [Length]Invasive component size additional dimension 1 [Length] in Breast tumorInv comp size addl dim 1 BTInvasive component size.additional dimension 1PATH.HISTOInvasive component size additional dimension 1, Breast TumorLen

Frequently asked questions

Code details

Code44636-9

SystemLOINC

Display nameInvasive component size additional dimension 1 (Breast tumor) [Length]

DescriptionInvasive component size.additional dimension 1

Short nameInv comp size addl dim 1 BT

ComponentInvasive component size.additional dimension 1

PropertyLen

TimingPt

System (specimen)Breast tumor

ScaleQn

ClassPATH.HISTO

Example unitscm

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.70

Consumer names

Invasive component size additional dimension 1, Breast Tumor

Part names

Invasive component size.additional dimension 1LenPtBreast tumorQnInvasive component size additional dimension 1LengthPoint 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.