LOINC Code 71509-4: Phone number extension Dialysis facility [ESRD]

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 Phone number extension. It is commonly used with the system or sample type Dialysis facility.

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: TRIAL
• Order vs observation: Observation
• Method: ESRD

What it does not mean

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

Key facts

• Phone number extension Dialysis facility [ESRD]
• Phone number extension
• Indicates the extension number for personnel's business phone number.
• Dialy; End Stage Renal Disease; ESRD survey; EXT; Fclty; No; Nominal; Num; Phone #; Phone # ext; Point in time; Random; Survey; Telecommunication number; Telephone number

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