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 401 of 2,187 · by category · by group · panels · answer lists · parts
Slope (us.m-mode) · Cardiac ultrasound 20265-5 Slope 2 (us.m-mode) · Cardiac ultrasound 20266-3 Slope/Slope 2 (us.m-mode+calculated) · Cardiac ultrasound 20267-1 Mitral valve Maximum regurgitant blood flow velocity during systole (us.doppler) · Cardiac ultrasound 20268-9 Mitral valve Acceleration slope (us.doppler) · Cardiac ultrasound 20269-7 Mitral valve Acceleration (us.doppler) · Cardiac ultrasound 20270-5 Mitral valve Diastolic filling period (us) · Cardiac ultrasound 20271-3 Mitral valve Diameter (us) · Cardiac ultrasound 20272-1 Mitral valve Diameter 2 (us) · Cardiac ultrasound 20273-9 Mitral valve Flow (us+calculated) · Cardiac ultrasound 20274-7 Deceleration.pressure.half time of Mitral valve US.doppler · Cardiac ultrasound 20275-4 Mitral valve Maximum blood flow velocity during systole (us --for peak half-time calculation) · Cardiac ultrasound 20276-2 Mitral valve Maximum blood flow velocity (us.doppler) · Cardiac ultrasound 20277-0 Mitral valve Mean blood velocity (us.doppler) · Cardiac ultrasound 20278-8 Orifice.minor axis.min of Mitral valve US 2D · Cardiac ultrasound 20279-6 Pressure half time (us+calculated) · Cardiac ultrasound 20280-4 Pulmonary artery Acceleration slope (us) · Cardiac ultrasound 20281-2 Pulmonary artery Deceleration slope (us) · Cardiac ultrasound 20282-0 Pulmonary artery Deceleration (us) · Cardiac ultrasound 20283-8 Pulmonic valve distal Mean blood flow velocity (us.doppler) · Cardiac ultrasound 20284-6 Left ventricular Pre ejection period (us) · Cardiac ultrasound 20285-3 R-R interval (us --at pulmonic flow measurement) · Cardiac ultrasound 20286-1 Pulmonic valve Region orifice area (us.doppler vti + area calculated) · Cardiac ultrasound 20287-9 Pulmonic valve Region orifice area (us.doppler vti + diameter calculated) · Cardiac ultrasound 20288-7 Pulmonic valve Region orifice area (us.doppler vmax + area calculated) · Cardiac ultrasound 20289-5 Pulmonic valve Region orifice area (us.doppler vmax + diameter calculated) · Cardiac ultrasound 20290-3 Pulmonic flow/Systemic flow (us.doppler vti + aorta calculated) · Cardiac ultrasound 20291-1 Pulmonic flow/Systemic flow (us.doppler vti + left ventricular outflow tract calculated) · Cardiac ultrasound 20292-9 Pulmonic flow/Systemic flow (us.doppler vmax + aorta calculated) · Cardiac ultrasound 20293-7 Pulmonic flow/Systemic flow (us.doppler vmax + left ventricular outflow tract calculated) · Cardiac ultrasound 20294-5 Pulmonic valve Q-wave to closure (us) · Cardiac ultrasound 20295-2 Tricuspid valve Q-wave to open (us) · Cardiac ultrasound 20296-0 Right atrial Intrachamber diastole pressure (estimated from jugular venous distention) · Cardiac ultrasound 20297-8 Region of interest · Cardiac ultrasound 20298-6 Right ventricular Peak pressure gradient (us.doppler) · Cardiac ultrasound 20299-4 Right ventricular Mean pressure gradient (us.doppler) · Cardiac ultrasound 20300-0 Right ventricular Pre ejection time (us) · Cardiac ultrasound 20301-8 Right ventricular outflow tract Mean blood flow velocity (us.doppler) · Cardiac ultrasound 20302-6 Right ventricular outflow tract Mean systole pressure gradient (us.doppler) · Cardiac ultrasound 20303-4 Right ventricular Minor axis.maximum (us 2d) · Cardiac ultrasound 20304-2 Right ventricular Diameter during systole (us) · Cardiac ultrasound 20305-9 Right ventricular outflow tract Region crossection (us+calculated) · Cardiac ultrasound 20306-7 Right ventricular outflow tract Diameter (us 2d) · Cardiac ultrasound 20307-5 Left ventricular Stroke volume index (us.2d+calculated) · Cardiac ultrasound 20308-3 Left ventricular Stroke volume index (us 2d aortic root calculated) · Cardiac ultrasound 20309-1 Left ventricular Stroke volume index (us.2d+calculated by biplane ellipse method) · Cardiac ultrasound 20310-9 Left ventricular Stroke volume index (us.2d+calculated by bullet method) · Cardiac ultrasound 20311-7 Left ventricular Stroke volume index (us.cubed.calculated) · Cardiac ultrasound 20312-5 Left ventricular Stroke volume index (us 2d left ventricular outflow tract area calculated) · Cardiac ultrasound 20313-3 Left ventricular Stroke volume index (us 2d modified biplane ellipse calculated) · Cardiac ultrasound 20314-1