LOINC Code 77617-9: Toe brachial index - left

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 Intravascular systolic.digital artery toe left/Brachial artery. It is commonly used with the system or sample type Peripheral vascular system.

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: Both

What it does not mean

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

Key facts

• Toe brachial index - left
• Intravascular systolic.digital artery toe left/Brachial artery
• The reading is derived in order to determine the severity of peripheral arterial disease present in a lower extremity. The test is performed using a small blood pressure cuff that is fitted around a toe along with a photoplethysmograph (PPG) infrared light sensor. The resultant toe brachial index (TBI) is generated using the systolic blood pressure readings from the arm and toe.
• BLOOD PRESSURE MEASUREMENTS.MOLEC; BP; BP sys; BP sys DA toe-l; Brach a; Cardio; Cardiology; Heart Disease; Intravenous; IV; L; LT; Periph; Point in time; PressureRatio; QNT; Quan; Quant; Quantitative; Random

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