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 42291-5: CT Retroperitoneum WO contrast

Name: LOINC Code 42291-5: CT Retroperitoneum WO contrast
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:28.127Z

42291-5 is a LOINC code used to identify CT Retroperitoneum WO contrast 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 Multisection^WO contrast. It is commonly used with the system or sample type Abdomen>Retroperitoneum.

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 Multisection^WO contrast. It is commonly used with the system or sample type Abdomen>Retroperitoneum.

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
Method: CT

What it does not mean

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

Key facts

CT Retroperitoneum WO contrast
Multisection^WO contrast
Abd; Abd.reper; Abdo; Abdomen+; Abdominal; c; CAT scan; Computed tomography; Computerized tomography; Contr; Contra; Contrst; CT scan; Document; Finding; Findings; Imaging; Point in time; Rad; RADIOLOGY; Random; Retroperitoneal; without contrast

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

CT Retroperitoneum WO contrastCT Retroperitoneum WO contrMultisection^WO contrastRADFindPtAbdomen>Retroperitoneum

Frequently asked questions

Code details

Code42291-5

SystemLOINC

Display nameCT Retroperitoneum WO contrast

DescriptionMultisection^WO contrast

Short nameCT Retroperitoneum WO contr

ComponentMultisection^WO contrast

PropertyFind

TimingPt

System (specimen)Abdomen>Retroperitoneum

ScaleDoc

MethodCT

ClassRAD

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.16

Last changed2.61

Part names

Multisection^WO contrastFindPtAbdomen>RetroperitoneumDocCTRetroperitoneumAbdomenContrastWOFindingPoint in time (spot)Computed tomography

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.