LOINCActiveObservation

LOINC Code 17987-9: Left ventricular Apical 2 chamber.systole.minimum [Volume] by US 2D modified

17987-9 is a LOINC code used to identify Left ventricular Apical 2 chamber.systole.minimum [Volume] by US 2D modified 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 Apical 2 chamber.systole.min. It is commonly used with the system or sample type Heart.ventricle.left.

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 Apical 2 chamber.systole.min. It is commonly used with the system or sample type Heart.ventricle.left.

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.2D.mod

What it does not mean

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

Key facts

  • Left ventricular Apical 2 chamber.systole.minimum [Volume] by US 2D modified
  • Apical 2 chamber.systole.min
  • 2D US; A2C; ap2; Apical 2CH sys.min; Apical 2CH. Sys; CARD.US; Cardiac; Cardio; Cardiology; Echography; Heart Disease; Hrt; Hrt ventr; II; L; LT; LV; LVESV; Minimal; minimum; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Sys; Sys.min; Syst; ULS; Ultrasound; Ultrasound - 2-dimensional; Ventricular; Volume

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

Left ventricular Apical 2 chamber.systole.minimum [Volume] by US 2D modifiedLV Apical 2CH sys.min Vol US.2D.modApical 2 chamber.systole.minCARD.USVolPtHeart.ventricle.left

Frequently asked questions

Code details

Code17987-9
SystemLOINC
Display nameLeft ventricular Apical 2 chamber.systole.minimum [Volume] by US 2D modified
DescriptionApical 2 chamber.systole.min
Short nameLV Apical 2CH sys.min Vol US.2D.mod
ComponentApical 2 chamber.systole.min
PropertyVol
TimingPt
System (specimen)Heart.ventricle.left
ScaleQn
MethodUS.2D.mod
ClassCARD.US
Example unitsmL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

Apical 2 chamber.systole.minVolPtHeart.ventricle.leftQnUS.2D.modVolumePoint in time (spot)Heart ventricle - leftUltrasound 2D.mod

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 17987-9 | HealthAssure