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 74574-5: Macroscopic observation Nar (Specimen) [Interp]

Name: LOINC Code 74574-5: Macroscopic observation Nar (Specimen) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:53.976Z

74574-5 is a LOINC code used to identify Macroscopic observation Nar (Specimen) [Interp] 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 Macroscopic 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 Macroscopic 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: Observation

What it does not mean

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

Key facts

Macroscopic observation [Interpretation] in Specimen Narrative
Macroscopic observation
This macroscopic exam test is a direct general observation of a microbiology specimen without a microscope. The result is given in free text and may comment on any aspect of the specimen that is considered relevant.
Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Microbiology; Misc; Miscellaneous; Narrative; Other; Point in time; Random; Report; Spec; 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

Macroscopic observation Nar (Specimen) [Interp]Macroscopic observation [Interpretation] in Specimen NarrativeMacroscopic obs Spec-ImpMacroscopic observationMICROInterpretation of Macroscopic observation test result, SpecimenImp

Frequently asked questions

Code details

Code74574-5

SystemLOINC

Display nameMacroscopic observation Nar (Specimen) [Interp]

DescriptionMacroscopic observation

Short nameMacroscopic obs Spec-Imp

ComponentMacroscopic observation

PropertyImp

TimingPt

System (specimen)XXX

ScaleNar

ClassMICRO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.48

Last changed2.69

Consumer names

Interpretation of Macroscopic observation test result, Specimen

Part names

Macroscopic observationImpPtXXXNarImpression/interpretation of studyPoint 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.