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 21-6: Amoxicillin+Clavulanate Disk diffusion (KB) [Susc]

Name: LOINC Code 21-6: Amoxicillin+Clavulanate Disk diffusion (KB) [Susc]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:29.457Z

21-6 is a LOINC code used to identify Amoxicillin+Clavulanate Disk diffusion (KB) [Susc] 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 Amoxicillin+Clavulanate. It is commonly used with the system or sample type Isolate.

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 Amoxicillin+Clavulanate. It is commonly used with the system or sample type Isolate.

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: Agar diffusion

What it does not mean

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

Key facts

Amoxicillin+Clavulanate [Susceptibility] by Disk diffusion (KB)
Amoxicillin+Clavulanate
Amox; Amoxicillin+clavulanic acid; Amoxicilloyl; Amoxil; ANTIBIOTIC SUSCEPTIBILITIES; AST; Augmentin; Bristamox; c204; c305; c6; Clav; Clavate; Clavu; Clavul; Clavulanic; Clavulanic acid; Disk diffusion; ID; Infectious Disease; InfectiousDisease; Islt; Isol; KB; Kirby-bauer; Larotid; Moxalin; Moxicillin+clavulanic acid; Point in time; Polymox; Random; Sumox; Sus; Suscept; Susceptibilities; Susceptibility; Susceptibilty; Trimox; Wymox

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

Amoxicillin+Clavulanate Disk diffusion (KB) [Susc]Amoxicillin+Clavulanate [Susceptibility] by Disk diffusion (KB)Amoxicillin+Clav Islt KBAmoxicillin+ClavulanateABXBACTSusceptibility to Amoxicillin+ClavulanateSusc

Frequently asked questions

Code details

Code21-6

SystemLOINC

Display nameAmoxicillin+Clavulanate Disk diffusion (KB) [Susc]

DescriptionAmoxicillin+Clavulanate

Short nameAmoxicillin+Clav Islt KB

ComponentAmoxicillin+Clavulanate

PropertySusc

TimingPt

System (specimen)Isolate

ScaleOrdQn

MethodAgar diffusion

ClassABXBACT

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.73

Consumer names

Susceptibility to Amoxicillin+Clavulanate

Part names

Amoxicillin+ClavulanateSuscPtIsolateOrdQnAgar diffusionSusceptibility (microorganisms)Point in time (spot)Disk diffusion (KB)

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.