LOINCActiveObservation

LOINC Code 53659-9: Fetal Cerebral artery middle Mean blood flow velocity US.doppler

53659-9 is a LOINC code used to identify Fetal Cerebral artery middle 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 Cerebral artery middle^Fetus.

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 Cerebral artery middle^Fetus.

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

  • Fetal Cerebral artery middle Mean blood flow velocity US.doppler
  • Blood flow velocity.mean
  • Art; Average; Avg; Bld flow; Bld flow vel; Bld flow.velocity; Cardio; Cardiology; Cereb; Cerebral a Middle; DOP; DUPLEX; Dynamic; Echography; Fetal; 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

Fetal Cerebral artery middle Mean blood flow velocity US.dopplerFet Cerebral a Middle Vmean DOPBlood flow velocity.meanOB.USVelPtCerebral artery middle^fetus

Frequently asked questions

Code details

Code53659-9
SystemLOINC
Display nameFetal Cerebral artery middle Mean blood flow velocity US.doppler
DescriptionBlood flow velocity.mean
Short nameFet Cerebral a Middle Vmean DOP
ComponentBlood flow velocity.mean
PropertyVel
TimingPt
System (specimen)Cerebral artery middle^Fetus
ScaleQn
MethodUS.doppler
ClassOB.US
Example unitscm/s
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.26
Last changed2.67

Part names

Blood flow velocity.meanVelPtCerebral artery middle^fetusQnUS.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.