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 42781-5: Surgical operation date Cancer

Name: LOINC Code 42781-5: Surgical operation date Cancer
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:28.586Z

42781-5 is a LOINC code used to identify Surgical operation date Cancer 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 Surgical operation date. It is commonly used with the system or sample type Cancer.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 Surgical operation date. It is commonly used with the system or sample type Cancer.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

Surgical operation date Cancer
Surgical operation date
CA; Date and time; Date of surgery; Date surgery; Misc; Miscellaneous; Oncology; Other; Point in time; QNT; Quan; Quant; Quantitative; Random; Spec; Surg; Surg op date; Surgery date; Time stamp; Timestamp; To be specified in another part of the message; TUMOR REGISTRY(NAACCR); 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

Surgical operation date CancerSurgical operation dateTUMRRGTTmStpPtCancer.XXXQn

Frequently asked questions

Code details

Code42781-5

SystemLOINC

Display nameSurgical operation date Cancer

DescriptionSurgical operation date

Short nameSurgical operation date Cancer

ComponentSurgical operation date

PropertyTmStp

TimingPt

System (specimen)Cancer.XXX

ScaleQn

ClassTUMRRGT

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.16

Last changed2.56

Part names

Surgical operation dateTmStpPtCancer.XXXQnTime Stamp (Date and Time)Point in time (spot)Cancer XXX

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.