LOINCActive

LOINC Code 8577-9: Systolic blood pressure Brachial artery - right/Brachial artery

8577-9 is a LOINC code used to identify Systolic blood pressure Brachial artery - right/Brachial artery in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Intravascular systolic.brachial artery right/Brachial artery. It is commonly used with the system or sample type Peripheral vascular system.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

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.brachial artery right/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

What it does not mean

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

Key facts

  • Systolic blood pressure Brachial artery - right/Brachial artery
  • Intravascular systolic.brachial artery right/Brachial artery
  • BLOOD PRESSURE MEASUREMENTS.MOLEC; BP; BP sys; BP sys BA-r; Brach a; Cardio; Cardiology; Heart Disease; Intravenous; IV; Periph; Point in time; PressureRatio; QNT; Quan; Quant; Quantitative; R; Random; RT

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

Systolic blood pressure Brachial artery - right/Brachial arteryBP sys BA-r/Brach aIntravascular systolic.brachial artery right/Brachial arteryBP.MOLECPresRtoPtPeripheral vascular system

Frequently asked questions

Code details

Code8577-9
SystemLOINC
Display nameSystolic blood pressure Brachial artery - right/Brachial artery
DescriptionIntravascular systolic.brachial artery right/Brachial artery
Short nameBP sys BA-r/Brach a
ComponentIntravascular systolic.brachial artery right/Brachial artery
PropertyPresRto
TimingPt
System (specimen)Peripheral vascular system
ScaleQn
ClassBP.MOLEC
Example unitsratio
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0h(3)
Last changed2.48

Part names

Intravascular systolic.brachial artery right/Brachial arteryPresRtoPtPeripheral vascular systemQnPressure RatioPoint in time (spot)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.