LOINC codes
The universal code system for lab observations. Every biomarker on this site is anchored to a LOINC code; a code page says what its parts mean.
By class
435 classes · the 32 with 500 codes or more Microbiology · MICRO 14,888 Chemistry · CHEM 10,855 Drug and toxicology · DRUG/TOX 8,921 Radiology · RAD 7,440 Allergy · ALLERGY 6,024 Challenge tests · CHAL 3,964 Document ontology · DOC.ONTOLOGY 3,759 PhenX measures · PHENX 3,686 Serology · SERO 3,167 Lab orders · LABORDERS.ONTOLOGY 2,546 PROMIS survey · SURVEY.PROMIS 2,463 Hematology and blood count · HEM/BC 2,449 Antibiotic susceptibility · ABXBACT 2,115 Cell markers · CELLMARK 1,746 General health survey · SURVEY.GNHLTH 1,629 Molecular pathology, mutations · MOLPATH.MUT 1,293 Blood bank · BLDBK 1,113 Coagulation · COAG 1,002 CMS survey · SURVEY.CMS 968 History and physical · H&P.HX 901 Pulmonary · PULM 878 PANEL.SURVEY.CMS 866 MDS survey · SURVEY.MDS 864 Cardiac ultrasound · CARD.US 817 Obstetric ultrasound · OB.US 793 Pathology · PATH 707 Molecular pathology · MOLPATH 704 PANEL.PHENX 704 Urinalysis · UA 597 HLA typing · HLA 526 H&P.PX 507 CLIN 502
All codes, by number
109,325 codes · page 402 of 2,187 · by category · by group · panels · answer lists · parts
Left ventricular Stroke volume index (us.modified simpson.calculated) · Cardiac ultrasound 20315-8 Left ventricular Stroke volume index 2 chamber (us 2d modified single-plane ellipse calculated) · Cardiac ultrasound 20316-6 Left ventricular Stroke volume index 4 chamber (us 2d modified single-plane ellipse calculated) · Cardiac ultrasound 20317-4 Left ventricular Stroke volume index (us 2d mitral valve calculated) · Cardiac ultrasound 20318-2 Left ventricular Stroke volume index (us 2d pulmonic valve flow area calculated) · Cardiac ultrasound 20319-0 Left ventricular Stroke volume index (us.2d+calculated by single-plane ellipse method) · Cardiac ultrasound 20320-8 Left ventricular Stroke volume index (us.teichholz) · Cardiac ultrasound 20321-6 Left ventricular Stroke volume index (us 2d tricuspid valve calculated) · Cardiac ultrasound 20322-4 Left ventricular Stroke volume (us.2d+calculated) · Cardiac ultrasound 20323-2 Left ventricular Stroke volume (us 2d aortic root calculated) · Cardiac ultrasound 20324-0 Left ventricular Stroke volume (us.2d+calculated by biplane ellipse method) · Cardiac ultrasound 20325-7 Left ventricular Stroke volume (us.2d+calculated by bullet method) · Cardiac ultrasound 20326-5 Left ventricular Stroke volume (us.cubed.calculated) · Cardiac ultrasound 20327-3 Left ventricular Stroke volume (us 2d left ventricular outflow tract area calculated) · Cardiac ultrasound 20328-1 Left ventricular Stroke volume (us 2d modified biplane ellipse calculated) · Cardiac ultrasound 20329-9 Left ventricular Stroke volume (us.2d+calculated by modified simpson method) · Cardiac ultrasound 20330-7 Left ventricular Stroke volume 2 chamber (us 2d modified single-plane calculated) · Cardiac ultrasound 20331-5 Left ventricular Cardiac output/Heart rate 4 chamber (us 2d modified single-plane calculated) · Cardiac ultrasound 20332-3 Left ventricular Stroke volume (us 2d mitral valve flow area calculated) · Cardiac ultrasound 20333-1 Right ventricular Stroke volume (us 2d pulmonic valve flow area calculated) · Cardiac ultrasound 20334-9 Left ventricular Stroke volume (us.2d+calculated by single-plane ellipse method) · Cardiac ultrasound 20335-6 Left ventricular Stroke volume (us.teichholz.calculated) · Cardiac ultrasound 20336-4 Right ventricular Stroke volume (us 2d tricuspid valve calculated) · Cardiac ultrasound 20337-2 Time (us.m-mode) · Cardiac ultrasound 20338-0 Time (us) · Cardiac ultrasound 20339-8 Time 2 (us) · Cardiac ultrasound 20340-6 Time/Time 2 (us) · Cardiac ultrasound 20341-4 R-R interval (us --at tricuspid flow measurement) · Cardiac ultrasound 20342-2 Tricuspid valve Acceleration slope (us) · Cardiac ultrasound 20343-0 Tricuspid valve annulus Region crossection (us.calculated) · Cardiac ultrasound 20344-8 Tricuspid valve Deceleration slope (us) · Cardiac ultrasound 20345-5 Right atrial Diastolic filling period (us) · Cardiac ultrasound 20346-3 Tricuspid valve Flow (us.calculated) · Cardiac ultrasound 20347-1 Tricuspid valve orifice Diameter.4 chamber (us) · Cardiac ultrasound 20348-9 Tricuspid valve Pressure half time velocity maximum (us) · Cardiac ultrasound 20349-7 Tricuspid valve Mean blood flow velocity (us.doppler) · Cardiac ultrasound 20350-5 Maximum blood flow velocity (us.doppler) · Cardiac ultrasound 20351-3 Circulatory system Mean blood flow velocity (us.doppler) · Cardiac ultrasound 20352-1 Region of interest Pressure gradient (us.doppler) · Cardiac ultrasound 20353-9 Blood velocity-time integral (us.doppler) · Cardiac ultrasound 20354-7 Peak blood flow 2 (us.doppler) · Cardiac ultrasound 20355-4 Mean blood flow 2 (us.doppler) · Cardiac ultrasound 20356-2 Region of interest Pressure gradient 2 (us.doppler) · Cardiac ultrasound 20357-0 Blood velocity-time integral 2 (us.doppler) · Cardiac ultrasound 20358-8 Heart valve Region (us.doppler vti + area calculated) · Cardiac ultrasound 20359-6 Heart valve Region (us.doppler vti + diameter calculated) · Cardiac ultrasound 20360-4 Heart valve Region (us.doppler velocity + area calculated) · Cardiac ultrasound 20361-2 Heart valve Region (us.doppler velocity + diameter calculated) · Cardiac ultrasound 20362-0 Velocity slope (us) · Cardiac ultrasound 20363-8 Velocity slope 2 (us) · Cardiac ultrasound 20364-6