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 30646-4: RF Guidance for change of tube in Sinus tract-- W contrast

Name: LOINC Code 30646-4: RF Guidance for change of tube in Sinus tract-- W contrast
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:16.075Z

30646-4 is a LOINC code used to identify RF Guidance for change of tube in Sinus tract-- W 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 Guidance for change of tube^W contrast. It is commonly used with the system or sample type XXX>Sinus tract.

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 Guidance for change of tube^W contrast. It is commonly used with the system or sample type XXX>Sinus tract.

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: RF

What it does not mean

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

Key facts

RF Guidance for change of tube in Sinus tract-- W contrast
Guidance for change of tube^W contrast
c; Contr; Contra; Contrst; Document; Exchange; Finding; Findings; Fluor; Fluoro; Fluoroscopy; Guid; Guide; Guided; Imaging; Misc; Miscellaneous; Other; Point in time; Rad; RADIOLOGY; Random; Replace; Spec; To be specified in another part of the message; Tube chnge; Unspecified; 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

RF Guidance for change of tube in Sinus tract-- W contrastRF Guided Sinus tr Tube chnge--W contrGuidance for change of tube^W contrastRADFindPtXXX>Sinus tract

Frequently asked questions

Code details

Code30646-4

SystemLOINC

Display nameRF Guidance for change of tube in Sinus tract-- W contrast

DescriptionGuidance for change of tube^W contrast

Short nameRF Guided Sinus tr Tube chnge--W contr

ComponentGuidance for change of tube^W contrast

PropertyFind

TimingPt

System (specimen)XXX>Sinus tract

ScaleDoc

MethodRF

ClassRAD

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.04

Last changed2.64

Part names

Guidance for change of tube^W contrastFindPtXXX>Sinus tractDocRFSinus tractTubeGuidanceContrastWXXXChangeFindingPoint in time (spot)Radio fluoroscopyUnspecified region imaged

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.