LOINCActiveObservation

LOINC Code 11671-5: Aortic arch Mean blood flow velocity US.doppler

11671-5 is a LOINC code used to identify Aortic arch Mean blood flow velocity US.doppler 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 Blood flow velocity.mean. It is commonly used with the system or sample type Aortic arch.

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 Blood flow velocity.mean. It is commonly used with the system or sample type Aortic arch.

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

  • Aortic arch Mean blood flow velocity US.doppler
  • Blood flow velocity.mean
  • Time-average of the maximum Doppler shift frequency envelope over the cardiac cycle. If System is Patient or System is Fetus or Other but context is supplied by DICOM Supplement 23-Structured Reporting, Observation Subject context Module (C.6.12).
  • Ac arch; AO; Average; Avg; Bld flow; Bld flow vel; Bld flow.velocity; Cardio; Cardiology; DOP; DUPLEX; Dynamic; Echography; Gyn; Gynecology; Heart Disease; Mean V; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; V mean; Vel; Velocity; Vmean

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

Aortic arch Mean blood flow velocity US.dopplerAc arch Vmean DOPBlood flow velocity.meanOB.USVelPtAortic arch

Frequently asked questions

Code details

Code11671-5
SystemLOINC
Display nameAortic arch Mean blood flow velocity US.doppler
DescriptionBlood flow velocity.mean
Short nameAc arch Vmean DOP
ComponentBlood flow velocity.mean
PropertyVel
TimingPt
System (specimen)Aortic arch
ScaleQn
MethodUS.doppler
ClassOB.US
Example unitscm/s
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.67

Part names

Blood flow velocity.meanVelPtAortic archQnUS.dopplerBlood flow velocity meanVelocity (distance/time)Point in time (spot)Ultrasound.doppler

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.