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.

LOINCActive

LOINC Code 21852-9: Census tract certainty 1970and80and90

Name: LOINC Code 21852-9: Census tract certainty 1970and80and90
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:30.107Z

21852-9 is a LOINC code used to identify Census tract certainty 1970and80and90 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 Census tract certainty 1970&80&90. It is commonly used with the system or sample type Census 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 Census tract certainty 1970&80&90. It is commonly used with the system or sample type Census 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
Method: *

What it does not mean

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

Key facts

Census tract certainty 1970and80and90

Census tract certainty 1970&80&90

Code indicating basis of assignment of census tract or block numbering area (BNA) for an individual record. Helpful in identifying cases tracted from incomplete information or P.O. Box. Most of the time, this information is provided by a geocoding vendor service. Alternatively, a central registry staff manually assigns the code. This item is not coded by the hospital. Codes are hierarchical, with lower numbers having priority. NoteCodes 1-5 and 9 are usually assigned by a geocoding vendor, while code 6 is usually assigned through a special effort by the central registry... NAACCR Data Standards and Data Dictionary Version 11

Census tract certainty 1970/80/90; Nominal; Point in time; Random; TUMOR REGISTRY(NAACCR); Typ

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

Census tract certainty 1970and80and90Census tract certainty 1970/80/90Census tract certainty 1970&80&90TUMRRGTTypePtCensus tract

Frequently asked questions

Code details

Code21852-9

SystemLOINC

Display nameCensus tract certainty 1970and80and90

DescriptionCensus tract certainty 1970&80&90

Short nameCensus tract certainty 1970/80/90

ComponentCensus tract certainty 1970&80&90

PropertyType

TimingPt

System (specimen)Census tract

ScaleNom

Method*

ClassTUMRRGT

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.38

Part names

Census tract certainty 1970&80&90TypePtCensus tractNom*Census tract certainty 1970and80and90Point 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.