LOINC Code 18166-9: Tricuspid valve Maximum regurgitant blood flow velocity during systole by US.doppler

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 Regurgitant blood flow velocity.systole.max. It is commonly used with the system or sample type Tricuspid 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

What it does not mean

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

Key facts

• Tricuspid valve Maximum regurgitant blood flow velocity during systole by US.doppler
• Regurgitant blood flow velocity.systole.max
• Bld flow; Bld flow vel; Bld flow.velocity; CARD.US; Cardio; Cardiology; DOP; DUPLEX; Dynamic; Echography; Heart Disease; Largest; Max regurg vel sys; Max V; Maximal; Maximum; Peak; Point in time; QNT; Quan; Quant; Quantitative; Random; Regurg bld flow vel; Sonogram; Sonograph; Sonography; Sys; Sys.max; Syst; TV; ULS; Ultrasound; V max; V sys; Vel; VEL max; Velocity; Vmax; Vmax sys

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