LOINC Code 21964-2: Modality Radiation treatment
21964-2 is a LOINC code used to identify Modality Radiation treatment 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 Modality. It is commonly used with the system or sample type Radiation.Rx.
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 Modality. It is commonly used with the system or sample type Radiation.Rx.
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
- Modality Radiation treatment
- Modality
- Records the dominant modality of radiation therapy used to deliver the clinically most significant regional dose to the primary volume of interest during the first course of treatment. Radiation treatment frequently is delivered in two or more phases that can be summarized as regional and boost treatments. To evaluate patterns of radiation oncology care, it is necessary to know which radiation resources were employed in the delivery of therapy. For outcomes analysis, the modalities used for each of these phases can be very important... NAACCR Data Standards and Data Dictionary Version 11
- Identity or presence; Nominal; Oncology; Point in time; Rad; Radiation Rx; Random; Treatment; TUMOR REGISTRY(NAACCR)
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
Frequently asked questions
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.