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 19793-9: Examination extent landmark [Description] Biliary duct Narrative ERCP

Name: LOINC Code 19793-9: Examination extent landmark [Description] Biliary duct Narrative ERCP
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.198Z

19793-9 is a LOINC code used to identify Examination extent landmark [Description] Biliary duct Narrative ERCP 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 Examination extent landmark. It is commonly used with the system or sample type Biliary duct.

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 Examination extent landmark. It is commonly used with the system or sample type Biliary duct.

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
Method: ERCP

What it does not mean

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

Key facts

Examination extent landmark [Description] Biliary duct Narrative ERCP
Examination extent landmark
BD; Bile tract; Biliary tract; Description; Endoscopic Retrograde Cholangiopancreatography; Exam extent landmark; examination ??; Gastro; Gastroenterology; GI; GI.ENDO; Narrative; Report; Studies; Study; Sutdies

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

Examination extent landmark [Description] Biliary duct Narrative ERCPExam extent landmark BD ERCPExamination extent landmarkENDO.GIDescStdyBiliary duct

Frequently asked questions

Code details

Code19793-9

SystemLOINC

Display nameExamination extent landmark [Description] Biliary duct Narrative ERCP

DescriptionExamination extent landmark

Short nameExam extent landmark BD ERCP

ComponentExamination extent landmark

PropertyDesc

TimingStdy

System (specimen)Biliary duct

ScaleNar

MethodERCP

ClassENDO.GI

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.40

Part names

Examination extent landmarkDescStdyBiliary ductNarERCPDescriptionStudyEndoscopic retrograde cholangiopancreatography (ERCP)

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.