LOINCActiveObservation

LOINC Code 86669-9: Mitotic figures LM (Cancer specimen) [#/Area]

86669-9 is a LOINC code used to identify Mitotic figures LM (Cancer specimen) [#/Area] 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 Mitotic figures. It is commonly used with the system or sample type Cancer specimen.

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 Mitotic figures. It is commonly used with the system or sample type Cancer specimen.

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.light

What it does not mean

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

Key facts

  • Mitotic figures [#/area] in Cancer specimen by Light microscopy
  • Mitotic figures
  • #/area; CA; Ca spec; LM; Micro; Micros; Microscopic; Mitoses; Number areic; PATH.HISTO; PATHOLOGY; Point in time; QNT; Quan; Quant; Quantitative; Random; Spec

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

Mitotic figures LM (Cancer specimen) [#/Area]Mitotic figures [#/area] in Cancer specimen by Light microscopyMitotic figures #/area Ca spec MicroMitotic figuresPATH.HISTOMitotic figures, Cancer specimenNaric

Frequently asked questions

Code details

Code86669-9
SystemLOINC
Display nameMitotic figures LM (Cancer specimen) [#/Area]
DescriptionMitotic figures
Short nameMitotic figures #/area Ca spec Micro
ComponentMitotic figures
PropertyNaric
TimingPt
System (specimen)Cancer specimen
ScaleQn
MethodMicroscopy.light
ClassPATH.HISTO
Example units/area
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.61
Last changed2.61

Consumer names

Mitotic figures, Cancer specimen

Part names

Mitotic figuresNaricPtCancer specimenQnMicroscopy.lightNumber Areic (per area)Point in time (spot)Light microscopy

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.

LOINC Code 86669-9 | HealthAssure