LOINC Code 21959-2: Number of radiation treatment
21959-2 is a LOINC code used to identify Number of 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 Number of radiation Rx. 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 Number of radiation Rx. 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
- Number of radiation treatment
- Number of radiation Rx
- Records the total number of treatment sessions (fractions) administered during the first course of therapy. See also RX Summ--Radiation [1360]... NAACCR Data Standards and Data Dictionary Version 11
- # radiation Rx; Cnt; Count; No; Num; Number; Oncology; Point in time; QNT; Quan; Quant; Quantitative; Rad; 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.