LOINC Code 84891-1: Response to neoadjuvant therapy Ql (Colorectal cancer specimen)

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 Response to neoadjuvant therapy. It is commonly used with the system or sample type Colorectal cancer specimen.

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
• Order vs observation: Observation

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Tumor response to neoadjuvant therapy
• Response to neoadjuvant therapy
• The response of the tumor to neoadjuvant treatment, such as chemotherapy and radiotherapy. Chemotherapy and/or radiotherapy before resection is associated with significant downstaging and improved prognosis. These specimens require close gross examination and additional blocking to demonstrate tumor. The degree of tumor regression has been shown to correlate with prognosis. This term was created for, but not limited in use to, the Colorectal Cancer Structured Reporting Protocol (2nd Edition, 2012) developed by the Royal College of Pathologists of Australasia (RCPA).
• CA; Ca spec; CRC spec; Ordinal; Pathology; Point in time; PR; QL; Qual; Qualitative; Random; Resp to neoadjvt therapy; Screen; Spec

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