LOINC Code 21973-3: 3rd course treatment Cancer Rx
21973-3 is a LOINC code used to identify 3rd course treatment Cancer Rx 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 3rd course treatment. It is commonly used with the system or sample type Subsequent cancer 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 3rd course treatment. It is commonly used with the system or sample type Subsequent cancer 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
- 3rd course treatment Cancer Rx
- 3rd course treatment
- The name for a group of subfields that describe the third course or set of subsequent therapy. As of January 1, 2003, COC no longer supports Subsequent Therapy data items. Group names appear only in the data dictionary and Appendix E. Subfields Subsq RX 3rd Course Surg [1691] Subsq RX 3rd Course Rad [1692] Subsq RX 3rd Course Chemo [1693] Subsq RX 3rd Course Horm [1694] Subsq RX 3rd Course BRM [1695] Subsq RX 3rd Course Oth [1696].. NAACCR Data Standards and Data Dictionary Version 11
- 3rd course Tx; CA; Identity or presence; Nominal; Oncology; Point in time; Random; Treatment; TUMOR REGISTRY(NAACCR); Tx
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.