LOINC Code 21917-0: Version used [Identifier] TNM classification
21917-0 is a LOINC code used to identify Version used [Identifier] TNM classification 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 Version used. It is commonly used with the system or sample type TNM classification.
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 Version used. It is commonly used with the system or sample type TNM classification.
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
- Version used [Identifier] TNM classification
- Version used
- A code that indicates the edition of the AJCC manual used to stage the case. This applies to the manually coded AJCC fields. It does not apply to the Derived AJCC T, N, M and AJCC Stage Group fields [2940, 2960, 2980, and 3000]. TNM codes have changed over time and conversion is not always simple. Therefore, a case-specific indicator is needed to allow grouping of cases for comparison... NAACCR Data Standards and Data Dictionary Version 11
- Ident; Identifier; Nominal; Oncology; Point in time; Random; TUMOR REGISTRY(NAACCR); Tumor, node, metastasis
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.