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 399 of 2,187 · by category · by group · panels · answer lists · parts
Region of interest Region (us 2d) · Cardiac ultrasound 20165-7 Diameter (us 2d) · Cardiac ultrasound 20166-5 Circulatory system Acceleration slope (us.doppler) · Cardiac ultrasound 20167-3 Circulatory system Acceleration (us.doppler) · Cardiac ultrasound 20168-1 Circulatory system Acceleration (us.doppler) · Cardiac ultrasound 20169-9 Acceleration 2 (us) · Cardiac ultrasound 20170-7 Acceleration/Acceleration 2 (us) · Cardiac ultrasound 20171-5 Aortic valve Regurgitant blood flow velocity at end diastole (us.doppler) · Cardiac ultrasound 20172-3 Aortic valve Maximum regurgitant blood flow velocity during diastole (us.doppler) · Cardiac ultrasound 20173-1 Aortic valve Acceleration slope (us) · Cardiac ultrasound 20174-9 Aortic valve Deceleration slope (us) · Cardiac ultrasound 20175-6 Aortic valve Deceleration (us) · Cardiac ultrasound 20176-4 Aorta root Crossection (us.calculated) · Cardiac ultrasound 20177-2 Aorta root Crossection (us 2d) · Cardiac ultrasound 20178-0 R-R interval (us --at aortic flow measurement) · Cardiac ultrasound 20179-8 Region of interest Area (us) · Cardiac ultrasound 20180-6 Region of interest Area 2 (us) · Cardiac ultrasound 20181-4 Region of interest Area/Area 2 (us) · Cardiac ultrasound 20182-2 Aortic valve Maximum blood flow velocity (us.doppler --at stenosis) · Cardiac ultrasound 20183-0 Diastolic blood pressure (us) · Cardiac ultrasound 20184-8 End systolic blood pressure (us) · Cardiac ultrasound 20185-5 Peak systolic blood pressure (us) · Cardiac ultrasound 20186-3 Left ventricular Cardiac index (us.2d+calculated by biplane ellipse method) · Cardiac ultrasound 20187-1 Left ventricular Cardiac index (us.2d+calculated by bullet method) · Cardiac ultrasound 20188-9 Ventricular Cardiac index (us.cubed.calculated) · Cardiac ultrasound 20189-7 Left ventricular Cardiac index (us 2d left ventricular outflow tract area calculated) · Cardiac ultrasound 20190-5 Left ventricular Cardiac index (us 2d modified biplane ellipse calculated) · Cardiac ultrasound 20191-3 Left ventricular Cardiac index (us.modified simpson.calculated) · Cardiac ultrasound 20192-1 Left ventricular Cardiac index 2 chamber (us.modified.single-plane.calculated) · Cardiac ultrasound 20193-9 Left ventricular Cardiac index 4 chamber (us.modified.single-plane.calculated) · Cardiac ultrasound 20194-7 Left ventricular Cardiac index (us 2d mitral valve calculated) · Cardiac ultrasound 20195-4 Right ventricular Cardiac index (us 2d pulmonic valve calculated) · Cardiac ultrasound 20196-2 Left ventricular Cardiac index (us.2d+calculated by single-plane ellipse method) · Cardiac ultrasound 20197-0 Left ventricular Cardiac index (us+calculated by teichholz method) · Cardiac ultrasound 20198-8 Right ventricular Cardiac index (us 2d tricuspid valve calculated) · Cardiac ultrasound 20199-6 Region of interest Circumference/Circumference 2 (us) · Cardiac ultrasound 20200-2 Circulatory system · Cardiac ultrasound 20201-0 Region of interest Circumference (us) · Cardiac ultrasound 20202-8 Region of interest Circumference 2 (us) · Cardiac ultrasound 20203-6 Left ventricular Cardiac output (us.2d+calculated by biplane ellipse method) · Cardiac ultrasound 20204-4 Left ventricular Cardiac output (us.2d+calculated by bullet method) · Cardiac ultrasound 20205-1 Left ventricular Cardiac output (us.cubed.calculated) · Cardiac ultrasound 20206-9 Left ventricular Cardiac output (us 2d left ventricular outflow tract calculated) · Cardiac ultrasound 20207-7 Left ventricular Cardiac output (us 2d modified biplane calculated) · Cardiac ultrasound 20208-5 Ventricular Cardiac output (us.2d+calculated by modified simpson method) · Cardiac ultrasound 20209-3 Left ventricular Cardiac output.2 chamber (us 2d modified single-plane calculated) · Cardiac ultrasound 20210-1 Left ventricular Cardiac output.4 chamber (us 2d modified single-plane calculated) · Cardiac ultrasound 20211-9 Left ventricular Cardiac output (us.2d+calculated by single-plane ellipse method) · Cardiac ultrasound 20212-7 Left ventricular Cardiac output (us+calculated by teichholz method) · Cardiac ultrasound 20213-5 Right ventricular Cardiac output (us 2d tricuspid valve) · Cardiac ultrasound 20214-3