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 30583-9: CT Internal auditory canal W contrast IV

Name: LOINC Code 30583-9: CT Internal auditory canal W contrast IV
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:16.075Z

30583-9 is a LOINC code used to identify CT Internal auditory canal W contrast IV 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^W contrast IV. It is commonly used with the system or sample type Head>Internal auditory canal.

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^W contrast IV. It is commonly used with the system or sample type Head>Internal auditory canal.

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 Internal auditory canal W contrast IV
Multisection^W contrast IV
Brain; c; CAT scan; Computed tomography; Computerized tomography; Contr; Contra; Contrst; Cranial; Cranium; CT scan; Document; Ear Canal; Finding; Findings; IAC; IAM; Imaging; Internal Auditory Meatus; Internal Ear Canal; Intracranial; Point in time; Rad; RADIOLOGY; Random; Skull; W contr IV; WC

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 Internal auditory canal W contrast IVCT IAC W contr IVMultisection^W contrast IVRADFindPtHead>Internal auditory canal

Frequently asked questions

Code details

Code30583-9

SystemLOINC

Display nameCT Internal auditory canal W contrast IV

DescriptionMultisection^W contrast IV

Short nameCT IAC W contr IV

ComponentMultisection^W contrast IV

PropertyFind

TimingPt

System (specimen)Head>Internal auditory canal

ScaleDoc

MethodCT

ClassRAD

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.04

Last changed2.61

Part names

Multisection^W contrast IVFindPtHead>Internal auditory canalDocCTTrueUnspecifiedHeadIVContrastWInternal auditory canalFindingPoint in time (spot)Computed tomographyIntravenous

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.