LOINCActiveBoth

LOINC Code 20566-6: Colony count Cx (Catheter tip) [#/Vol]

20566-6 is a LOINC code used to identify Colony count Cx (Catheter tip) [#/Vol] 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 Colony count. It is commonly used with the system or sample type Ctp.

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 Colony count. It is commonly used with the system or sample type Ctp.

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: Culture

What it does not mean

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

Key facts

  • Colony count [#/volume] in Catheter tip by Culture
  • Colony count
  • #; ABS; absolute; absolutes; C&S; Cath Tip; Catheter tip; CC; Cnt; Colonies; Count; Count/volume; CT; Cult; Cultures; ID; Infectious Disease; InfectiousDisease; Microbiology; Number concentration; Number Concentration (count/vol); Point in time; QNT; Quan; Quant; Quantitative; Random

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

Colony count Cx (Catheter tip) [#/Vol]Colony count [#/volume] in Catheter tip by CultureCC # Cath Tip CultColony countMICROColony count culture, Catheter tipNCnc

Frequently asked questions

Code details

Code20566-6
SystemLOINC
Display nameColony count Cx (Catheter tip) [#/Vol]
DescriptionColony count
Short nameCC # Cath Tip Cult
ComponentColony count
PropertyNCnc
TimingPt
System (specimen)Ctp
ScaleQn
MethodCulture
ClassMICRO
Example units/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.42

Consumer names

Colony count culture, Catheter tip

Part names

Colony countNCncPtCtpQnCultureNumber ConcentrationPoint in time (spot)Catheter tip

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.

LOINC Code 20566-6 | HealthAssure