LOINC Code 98721-4: Spontaneous activity.fibrillation of Muscle on EMG

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 Spontaneous activity.fibrillation. It is commonly used with the system or sample type Muscle.

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
• Method: EMG

What it does not mean

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

Key facts

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