LOINC Code 79957-7: Aortic valve Effective orifice area during systole (by US.doppler+Calculated by continuity Vmax)/Body surface area

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 Effective orifice area.systole/Body surface area. It is commonly used with the system or sample type Aortic valve.

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: US.doppler+Calculated by continuity Vmax

What it does not mean

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

Key facts

• Aortic valve Effective orifice area during systole (by US.doppler+Calculated by continuity Vmax)/Body surface area
• Effective orifice area.systole/Body surface area
• AO; AoV; AV; AVA; Bdy surface; bod; Bodies; BSA; Calc; Calculation; CARD.US; CARD.US.DICOM; Cardio; Cardiology; DOP; DUPLEX; Echography; EOA sys; Heart Disease; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Surf; Sys; Syst; ULS; Ultrasound

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