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 105565-6: Percentage of people in a block group younger than age 5

Name: LOINC Code 105565-6: Percentage of people in a block group younger than age 5
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:19.135Z

105565-6 is a LOINC code used to identify Percentage of people in a block group younger than age 5 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 Percentage of people in a block group younger than age 5. It is commonly used with the system or sample type ^Patient.

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 Percentage of people in a block group younger than age 5. It is commonly used with the system or sample type ^Patient.

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

What it does not mean

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

Key facts

Percentage of people in a block group younger than age 5
Number fraction; Percent; Percent young than 5; PhenX; 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

Percentage of people in a block group younger than age 5Percent young than 5PHENXNFrPt^PatientQn

Frequently asked questions

Code details

Code105565-6

SystemLOINC

Display namePercentage of people in a block group younger than age 5

Short namePercent young than 5

ComponentPercentage of people in a block group younger than age 5

PropertyNFr

TimingPt

System (specimen)^Patient

ScaleQn

ClassPHENX

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.78

Last changed2.78

Part names

Percentage of people in a block group younger than age 5NFrPt^PatientQnNumber FractionPoint in time (spot)

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.