LOINC Code 21958-4: Regional radiation treatment Dose
21958-4 is a LOINC code used to identify Regional radiation treatment Dose 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 Regional radiation Rx. It is commonly used with the system or sample type Dose.
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 Regional radiation Rx. It is commonly used with the system or sample type Dose.
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
- Regional radiation treatment Dose
- Regional radiation Rx
- The dominant or most clinically significant total dose of regional radiation therapy delivered to the patient during the first course of treatment. The unit of measure is centiGray (cGy). See also Rad--Regional RX Modality [1570]. [cGy=joules/kilogram. IUPAC PROPERTY IS 'MASSIC ENERGY' 9.39.1 in Silver Book..KMercer].. NAACCR Data Standards and Data Dictionary Version 11
- Dose med or substance; Energy content; Oncology; Point in time; QNT; Quan; Quant; Quantitative; Random; Reg radiation Rx; 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.