LOINCActiveObservation

LOINC Code 33731-1: Histology type Nar (Cancer specimen)

33731-1 is a LOINC code used to identify Histology type Nar (Cancer 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 Histology type. 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 Histology type. 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

What it does not mean

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

Key facts

  • Histology type in Cancer specimen Narrative
  • Histology type
  • CA; Ca spec; Finding; Findings; Narrative; PATH.HISTO; 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

Histology type Nar (Cancer specimen)Histology type in Cancer specimen NarrativeHistology type Ca specHistology typePATH.HISTOHistology type, Cancer specimenFind

Frequently asked questions

Code details

Code33731-1
SystemLOINC
Display nameHistology type Nar (Cancer specimen)
DescriptionHistology type
Short nameHistology type Ca spec
ComponentHistology type
PropertyFind
TimingPt
System (specimen)Cancer specimen
ScaleNar
ClassPATH.HISTO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.61

Consumer names

Histology type, Cancer specimen

Part names

Histology typeFindPtCancer specimenNarFindingPoint 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 33731-1 | HealthAssure