LOINC Code 29426-4: Pulmonary vein - left lower Maximum 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 Blood flow velocity.systole.max. It is commonly used with the system or sample type Pulmonary vein.left lower.

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

• Pulmonary vein - left lower Maximum blood flow velocity during systole by US.doppler
• Blood flow velocity.systole.max
• Bld flow; Bld flow vel; Bld flow.velocity; CARD.US; Cardio; Cardiology; DOP; DUPLEX; Dynamic; Echography; Heart Disease; L; Largest; LLPV; Low; LT; Max V; Maximal; Maximum; Peak; Point in time; Pulm v; PV-LL; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Sys; Sys.max; Syst; ULS; Ultrasound; V max; V sys; Vel; VEL max; Velocity; Ven; Venous; 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