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.

LOINCObservation

LOINC Code 33741-0: Perineural invasion CAP Nom (Spec)

Name: LOINC Code 33741-0: Perineural invasion CAP Nom (Spec)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:21.184Z

33741-0 is a LOINC code used to identify Perineural invasion CAP Nom (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 Perineural invasion. 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 Perineural invasion. 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: DEPRECATED
Order vs observation: Observation
Method: CAP cancer protocols

What it does not mean

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

Key facts

Deprecated Perineural invasion [Type] in Specimen by CAP cancer protocols
Perineural invasion
CAP prot; Nominal; PATH.HISTO; PATHOLOGY; Point in time; Random; Spec; Typ

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

Perineural invasion CAP Nom (Spec)Deprecated Perineural invasion [Type] in Specimen by CAP cancer protocolsDeprecated Perineural invasion Spec CAP protPerineural invasionPATH.HISTOPerineural invasion, SpecimenType

Frequently asked questions

Code details

Code33741-0

SystemLOINC

Display namePerineural invasion CAP Nom (Spec)

DescriptionPerineural invasion

Short nameDeprecated Perineural invasion Spec CAP prot

ComponentPerineural invasion

PropertyType

TimingPt

System (specimen)Specimen

ScaleNom

MethodCAP cancer protocols

ClassPATH.HISTO

StatusDEPRECATED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.66

Consumer names

Perineural invasion, Specimen

Part names

Perineural invasionTypePtSpecimenNomCAP cancer protocolsPoint 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.