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.

LOINCActiveBoth

LOINC Code 66121-5: Pathology biopsy report Nar (Tiss)

Name: LOINC Code 66121-5: Pathology biopsy report Nar (Tiss)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:45.459Z

66121-5 is a LOINC code used to identify Pathology biopsy report Nar (Tiss) 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 Pathology biopsy report. It is commonly used with the system or sample type Tiss.

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 Pathology biopsy report. It is commonly used with the system or sample type Tiss.

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

What it does not mean

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

Key facts

Tissue Pathology biopsy report
Pathology biopsy report
Bpsy; Bx; Finding; Findings; Narrative; Path; Path Bx report; Pathology; Point in time; Random; Report; Tissue; Tissue, 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

Pathology biopsy report Nar (Tiss)Tissue Pathology biopsy reportTiss Path Bx reportPathology biopsy reportPATHPathology biopsy report, TissueFind

Frequently asked questions

Code details

Code66121-5

SystemLOINC

Display namePathology biopsy report Nar (Tiss)

DescriptionPathology biopsy report

Short nameTiss Path Bx report

ComponentPathology biopsy report

PropertyFind

TimingPt

System (specimen)Tiss

ScaleNar

ClassPATH

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.73

Consumer names

Pathology biopsy report, Tissue

Part names

Pathology biopsy reportFindPtTissNarFindingPoint in time (spot)Tissue and Smears

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.