LOINC Code 59557-9: Treatment status Cancer
59557-9 is a LOINC code used to identify Treatment 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 Treatment status. It is commonly used with the system or sample type Cancer.XXX.
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 Treatment 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
- Treatment status Cancer
- Treatment status
- This data item is a summary of the status for all treatment modalities. It is used in conjunction with Date of Initial RX-SEER [1260] and/or Date of 1st Crs RX-CoC [1270] and each modality of treatment with their respective date field to document whether treatment was given or not given, whether it is unknown if treatment was given, or whether treatment was given on an unknown date. Also indicates active surveillance (watchful waiting). This data item is effective for January 2010+ diagnoses... NAACCR Data Standards and Data Dictionary Version 12
- CA; Identity or presence; Misc; Miscellaneous; Nominal; Oncology; Other; Point in time; Random; Spec; To be specified in another part of the message; TUMOR REGISTRY(NAACCR); Tx; Tx status; 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
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.