LOINC

LOINC Code 12015-4: Deprecated Resistivity index of Cerebral artery middle Doppler.calculated

12015-4 is a LOINC code used to identify Deprecated Resistivity index of Cerebral artery middle Doppler.calculated 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 Resistivity index. It is commonly used with the system or sample type Cerebral artery middle^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 Resistivity index. It is commonly used with the system or sample type Cerebral artery middle^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: DEPRECATED
  • Method: Doppler.calculated

What it does not mean

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

Key facts

  • Deprecated Resistivity index of Cerebral artery middle Doppler.calculated
  • Resistivity 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).
  • Art; Calc; Calculation; Cereb; Cerebral a Middle; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; QNT; Quan; Quant; Quantitative; Random; RI; 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

Deprecated Resistivity index of Cerebral artery middle Doppler.calculatedDeprecatedResistivity indexResistivity indexOB.USVelRtoPtCerebral artery middle^Patient

Frequently asked questions

Code details

Code12015-4
SystemLOINC
Display nameDeprecated Resistivity index of Cerebral artery middle Doppler.calculated
DescriptionResistivity index
Short nameDeprecatedResistivity index
ComponentResistivity index
PropertyVelRto
TimingPt
System (specimen)Cerebral artery middle^Patient
ScaleQn
MethodDoppler.calculated
ClassOB.US
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.36

Part names

Resistivity indexVelRtoPtCerebral artery middle^PatientQnDoppler.calculatedVelocity 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.