LOINCActiveObservation

LOINC Code 81178-6: Tissue block description and site Nar (Spec)

81178-6 is a LOINC code used to identify Tissue block description and site Nar (Spec) 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 Tissue block description and site. It is commonly used with the system or sample type 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 Tissue block description and site. It is commonly used with the system or sample type 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

What it does not mean

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

Key facts

  • Tissue block description and site Narrative
  • Tissue block description and site
  • The description of the tissue block and site from which it was taken. Following the macroscopic description, dissection and block selection is performed.
  • Description; Narrative; Pathology; Point in time; Random; Report; 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

Tissue block description and site Nar (Spec)Tissue block description and site NarrativeBlock description and site SpecTissue block description and sitePATHTissue block description and Site, SpecimenDesc

Frequently asked questions

Code details

Code81178-6
SystemLOINC
Display nameTissue block description and site Nar (Spec)
DescriptionTissue block description and site
Short nameBlock description and site Spec
ComponentTissue block description and site
PropertyDesc
TimingPt
System (specimen)Specimen
ScaleNar
ClassPATH
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.73

Consumer names

Tissue block description and Site, Specimen

Part names

Tissue block description and siteDescPtSpecimenNarDescriptionPoint 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 81178-6 | HealthAssure