LOINCActiveObservation

LOINC Code 12008-9: Pulsatility index US.doppler

12008-9 is a LOINC code used to identify Pulsatility index 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 Pulsatility index. It is commonly used with the system or sample type ^Patient.

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 Pulsatility index. It is commonly used with the system or sample type ^Patient.

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

  • Pulsatility index US.doppler
  • Pulsatility index
  • For use when the System is Patient or when the System is Fetus or Other but the context is supplied by DICOM Supplement 23-Structured Reporting, Observation Subject context Module (C.6.12).
  • DOP; DUPLEX; Echography; Gyn; Gynecology; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; PI; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Velocity ratio

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

Pulsatility index US.dopplerPI DOPPulsatility indexOB.USVelRtoPt^Patient

Frequently asked questions

Code details

Code12008-9
SystemLOINC
Display namePulsatility index US.doppler
DescriptionPulsatility index
Short namePI DOP
ComponentPulsatility index
PropertyVelRto
TimingPt
System (specimen)^Patient
ScaleQn
MethodUS.doppler
ClassOB.US
Example unitsindex
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.48

Part names

Pulsatility indexVelRtoPt^PatientQnUS.dopplerVelocity RatioPoint 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.

LOINC Code 12008-9 | HealthAssure