LOINC Code 17989-5: Left ventricular Maximum Apical 4 chamber.diastole [Volume] by US 2D modified

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 Apical 4 chamber.diastole.max. It is commonly used with the system or sample type Heart.ventricle.left.

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.2D.mod

What it does not mean

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

Key facts

• Left ventricular Maximum Apical 4 chamber.diastole [Volume] by US 2D modified
• Apical 4 chamber.diastole.max
• 2D US; A4C; ap4; Apical 4CH; Apical 4CH dias; Apical 4CH dias.max; CARD.US; Cardiac; Cardio; Cardiology; Dias; Dias.max; Diast; Diastoli; Echography; Heart Disease; Hrt; Hrt ventr; L; Largest; LT; LV; LVEDV; Maximal; Maximum; Peak; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Ultrasound - 2-dimensional; Ventricular; Volume

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