LOINC Code 55137-4: Penicillin Parenteral MIC (Isolate.meningitis) [Susc]

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 Penicillin.parenteral. It is commonly used with the system or sample type Isolate.meningitis.

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: MIC

What it does not mean

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

Key facts

• Penicillin Parenteral [Susceptibility] for meningitis by Minimum inhibitory concentration (MIC)
• Penicillin.parenteral
• Susceptibility of an isolate to parenteral penicillin in the context of a patient with meningitis, i.e., the "meningitis breakpoint". Various agencies, including the FDA and CLSI in the U.S. and EUCAST in Europe, publish guidelines for determining susceptibility of different organisms to different antimicrobials. In most cases, susceptibility does not vary by type of infection, but for a few specific types of infection, including meningitis, pneumonia and urinary tract infection, certain antimicrobials have different susceptibility thresholds.
• ANTIBIOTIC SUSCEPTIBILITIES; AST; ID; Infectious Disease; InfectiousDisease; Islt; Islt.mening; Isol; Mening; Minimum inhibitory concentration; PCN; Pen; Penicillin Parenteral; Penicilloyl; Point in time; Random; Sus; Suscept; Susceptibilities; Susceptibility; Susceptibilty; Wycillin

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