LOINCActiveObservation

LOINC Code 18001-8: Mitral valve Deceleration.pressure.half time by US.doppler

18001-8 is a LOINC code used to identify Mitral valve Deceleration.pressure.half time by 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 Deceleration.pressure.half time. It is commonly used with the system or sample type Mitral valve.

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 Deceleration.pressure.half time. It is commonly used with the system or sample type Mitral valve.

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

  • Mitral valve Deceleration.pressure.half time by US.doppler
  • Deceleration.pressure.half time
  • CARD.US; Cardio; Cardiology; Dec; Decel.pres.1/2T; DOP; DT; DUPLEX; Echography; Heart Disease; MV; P1/2T; PHT; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; T1/2; ULS; Ultrasound

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

Mitral valve Deceleration.pressure.half time by US.dopplerMV Decel.pres.1/2T DOPDeceleration.pressure.half timeCARD.USTimePtMitral valve

Frequently asked questions

Code details

Code18001-8
SystemLOINC
Display nameMitral valve Deceleration.pressure.half time by US.doppler
DescriptionDeceleration.pressure.half time
Short nameMV Decel.pres.1/2T DOP
ComponentDeceleration.pressure.half time
PropertyTime
TimingPt
System (specimen)Mitral valve
ScaleQn
MethodUS.doppler
ClassCARD.US
Example unitsms
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.48

Part names

Deceleration.pressure.half timeTimePtMitral valveQnUS.dopplerTime (e.g. seconds)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.

LOINC Code 18001-8 | HealthAssure