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 21944-4: Lung and leukemia CNS radiation status Cancer

Name: LOINC Code 21944-4: Lung and leukemia CNS radiation status Cancer
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:30.107Z

21944-4 is a LOINC code used to identify Lung and leukemia CNS radiation status Cancer 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 Lung & leukemia CNS radiation status. It is commonly used with the system or sample type Cancer.XXX.

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 Lung & leukemia CNS radiation status. It is commonly used with the system or sample type Cancer.XXX.

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

What it does not mean

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

Key facts

Lung and leukemia CNS radiation status Cancer

Lung & leukemia CNS radiation status

For lung and leukemia cases only, codes for radiation given to the brain or central nervous system. Includes treatment given at all facilities as part of the first course. See Chapter V, Unresolved Issues, for more information. NoteSEER does not collect this data item beginning with 1998 cases. They retain the codes for older cases in this field, and they have also recoded radiation coded here as radiation in RX Summ--Radiation [1360]. COC does not collect this data item beginning with 1996 cases... NAACCR Data Standards and Data Dictionary Version 11

CA; Lung; Lung/Leukemia CNS Rad status; Misc; Miscellaneous; Nominal; Oncology; Other; Point in time; Pulmonary; Pulmonology; Random; Respiratory; Spec; To be specified in another part of the message; TUMOR REGISTRY(NAACCR); Typ; Unspecified

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

Lung and leukemia CNS radiation status CancerLung/Leukemia CNS Rad status CancerLung & leukemia CNS radiation statusTUMRRGTTypePtCancer.XXX

Frequently asked questions

Code details

Code21944-4

SystemLOINC

Display nameLung and leukemia CNS radiation status Cancer

DescriptionLung & leukemia CNS radiation status

Short nameLung/Leukemia CNS Rad status Cancer

ComponentLung & leukemia CNS radiation status

PropertyType

TimingPt

System (specimen)Cancer.XXX

ScaleNom

ClassTUMRRGT

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.38

Part names

Lung & leukemia CNS radiation statusTypePtCancer.XXXNomLung and leukemia CNS radiation statusPoint in time (spot)Cancer XXX

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.