LOINCActiveBoth

LOINC Code 669-2: Microscopic observation Macchiavello stain Nom (Specimen)

669-2 is a LOINC code used to identify Microscopic observation Macchiavello stain Nom (Specimen) 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 Observation. It is commonly used with the system or sample type XXX.

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 Observation. It is commonly used with the system or sample type XXX.

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: Both
  • Method: Macchiavello stain

What it does not mean

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

Key facts

  • Microscopic observation [Identifier] in Specimen by Macchiavello stain
  • Observation
  • ID; Identity or presence; Infectious Disease; InfectiousDisease; Macchiavello Stn; Microbiology; Misc; Miscellaneous; Nominal; Other; Point in time; Random; Spec; St; Stains; Stn; To be specified in another part of the message; Unspecified

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

Microscopic observation Macchiavello stain Nom (Specimen)Microscopic observation [Identifier] in Specimen by Macchiavello stainMacchiavello Stn SpecObservationMICROMicroscopic observation, SpecimenPrid

Frequently asked questions

Code details

Code669-2
SystemLOINC
Display nameMicroscopic observation Macchiavello stain Nom (Specimen)
DescriptionObservation
Short nameMacchiavello Stn Spec
ComponentObservation
PropertyPrid
TimingPt
System (specimen)XXX
ScaleNom
MethodMacchiavello stain
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.78

Consumer names

Microscopic observation, Specimen

Part names

ObservationPridPtXXXNomMacchiavello stainPresence or IdentityPoint 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.

LOINC Code 669-2 | HealthAssure