LOINC Code 63854-4: About how old were you the last time you got this exposure [NHL]

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 About how old were you the last time you got this exposure. It is commonly used with the system or sample type ^Patient.

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
• Method: NHL

What it does not mean

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

Key facts

• About how old were you the last time you got this exposure [NHL]
• About how old were you the last time you got this exposure
• Exp; Last exposure age estimate; Last exposure age exact; Past; PhenX; Point in time; QNT; Quan; Quant; Quantitative; Random

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