ATC code C03 Diuretics is a therapeutic subgroup of the Anatomical Therapeutic Chemical Classification System, a system of alphanumeric codes developed by the World Health Organization (WHO) for the classification of drugs and other medical products. Subgroup C03 is part of the anatomical group C Cardiovascular system.
Codes for veterinary use (ATCvet codes) can be created by placing the letter Q in front of the human ATC code: for example, QC03. ATCvet codes without corresponding human ATC codes are cited with the leading Q in the following list.National issues of the ATC classification may include additional codes not present in this list, which follows the WHO version.
C03A Low-ceiling diuretics, thiazides
C03AA Thiazides, plain
C03AA01 Bendroflumethiazide C03AA02 Hydroflumethiazide C03AA03 Hydrochlorothiazide C03AA04 Chlorothiazide C03AA05 Polythiazide C03AA06 Trichlormethiazide C03AA07 Cyclopenthiazide C03AA08 Methyclothiazide C03AA09 Cyclothiazide C03AA13 Mebutizide QC03AA56 Trichlormethiazide, combinationsC03AB Thiazides and potassium in combination
C03AB01 Bendroflumethiazide and potassium C03AB02 Hydroflumethiazide and potassium C03AB03 Hydrochlorothiazide and potassium C03AB04 Chlorothiazide and potassium C03AB05 Polythiazide and potassium C03AB06 Trichlormethiazide and potassium C03AB07 Cyclopenthiazide and potassium C03AB08 Methyclothiazide and potassium C03AB09 Cyclothiazide and potassiumC03AH Thiazides, combinations with psycholeptics and/or analgesics
C03AH01 Chlorothiazide, combinations C03AH02 Hydroflumethiazide, combinationsC03AX Thiazides, combinations with other drugs
C03AX01 Hydrochlorothiazide, combinationsC03B Low-ceiling diuretics, excluding thiazides
C03BA Sulfonamides, plain
C03BA02 Quinethazone C03BA03 Clopamide C03BA04 Chlortalidone C03BA05 Mefruside C03BA07 Clofenamide C03BA08 Metolazone C03BA09 Meticrane C03BA10 Xipamide C03BA11 Indapamide C03BA12 Clorexolone C03BA13 Fenquizone C03BA82 Clorexolone, combinations with psycholepticsC03BB Sulfonamides and potassium in combination
C03BB02 Quinethazone and potassium C03BB03 Clopamide and potassium C03BB04 Chlortalidone and potassium C03BB05 Mefruside and potassium C03BB07 Clofenamide and potassiumC03BC Mercurial diuretics
C03BC01 MersalylC03BD Xanthine derivatives
C03BD01 TheobromineC03BK Sulfonamides, combinations with other drugs
C03BX Other low-ceiling diuretics
C03BX03 CicletanineC03C High-ceiling diuretics
C03CA Sulfonamides, plain
C03CA01 Furosemide C03CA02 Bumetanide C03CA03 Piretanide C03CA04 TorasemideC03CB Sulfonamides and potassium in combination
C03CB01 Furosemide and potassium C03CB02 Bumetanide and potassiumC03CC Aryloxyacetic acid derivatives
C03CC01 Etacrynic acid C03CC02 Tienilic acidC03CD Pyrazolone derivatives
C03CD01 MuzolimineC03CX Other high-ceiling diuretics
C03CX01 EtozolinC03D Aldosterone antagonists and other potassium-sparing agents
C03DA Aldosterone antagonists
C03DA01 Spironolactone C03DA02 Potassium canrenoate C03DA03 Canrenone C03DA04 Eplerenone C03DA05 FinerenoneC03DB Other potassium-sparing agents
C03DB01 Amiloride C03DB02 TriamtereneC03E Diuretics and potassium-sparing agents in combination
C03EA Low-ceiling diuretics and potassium-sparing agents
C03EA01 Hydrochlorothiazide and potassium-sparing agents C03EA02 Trichlormethiazide and potassium-sparing agents C03EA03 Epitizide and potassium-sparing agents C03EA04 Altizide and potassium-sparing agents C03EA05 Mebutizide and potassium-sparing agents C03EA06 Chlortalidone and potassium-sparing agents C03EA07 Cyclopenthiazide and potassium-sparing agents C03EA12 Metolazone and potassium-sparing agents C03EA13 Bendroflumethiazide and potassium-sparing agents C03EA14 Butizide and potassium-sparing agentsC03EB High-ceiling diuretics and potassium-sparing agents
C03EB01 Furosemide and potassium-sparing agents C03EB02 Bumetanide and potassium-sparing agentsC03X Other diuretics
C03XA Vasopressin antagonists
C03XA01 Tolvaptan C03XA02 ConivaptanReferences
"ATC (Anatomical Therapeutic Chemical Classification System) – Synopsis". National Institutes of Health. Retrieved 1 February 2020. https://www.nlm.nih.gov/research/umls/sourcereleasedocs/current/ATC/index.html ↩
World Health Organization. "Anatomical Therapeutic Chemical (ATC) Classification". World Health Organization. Retrieved 3 January 2022. /wiki/World_Health_Organization ↩
"Structure and principles". WHO Collaborating Centre for Drug Statistics Methodology. 15 February 2018. Retrieved 3 January 2022. https://www.whocc.no/atc/structure_and_principles/ ↩
"ATC/DDD Index 2022: code C03". WHO Collaborating Centre for Drug Statistics Methodology. http://www.whocc.no/atc_ddd_index/?code=C03 ↩
"ATCvet Index 2022: code QC03". WHO Collaborating Centre for Drug Statistics Methodology. http://www.whocc.no/atcvet/atcvet_index/?code=C03 ↩