#ATC4 CODE CODE#

If accepted it becomes a final decision and published semi-annually on the website and WHO Drug Information and implemented in the annual print/on-line ACT/DDD Index on January 1. New ATC/DDD codes are discussed at the semi-annual Working Group meeting.

#ATC4 CODE CODE#

A preliminary or temporary code is assigned and published on the website and in the WHO Drug Information for comment or objection. An application is submitted to WHO for ATC classification and DDD assignment. ДЄTC follows guidelines in creating new codes for newly approved drugs. National issues of the ATC classification, such as the German Anatomisch-therapeutisch-chemische Klassifikation mit Tagesdosen, may include additional codes and DDDs not present in the WHO version. According to the definition, 'he DDD is the assumed average maintenance dose per day for a drug used for its main indication in adults.' Adaptations and updates This is a measurement of drug consumption based on the usual daily dose for a given drug. The ATC system also includes defined daily doses (DDDs) for many drugs. The Uppsala Monitoring Centre is responsible for the Herbal ATC classification, and it is part of the WHODrug Global portfolio available by subscription. The herbal classification is not adopted by WHO. The Herbal ATC system (HATC) is an ATC classification of herbal substances it differs from the regular ATC system by using 4 digits instead of 2 at the 5th level group. Some codes are used exclusively for veterinary drugs, such as QI Immunologicals, QJ51 Antibacterials for intramammary use or QN05AX90 amperozide. For example, furosemide for veterinary use has the code QC03CA01. ATCvet codes can be created by placing the letter Q in front of the ATC code of most human medications. The Anatomical Therapeutic Chemical Classification System for veterinary medicinal products (ATCvet) is used to classify veterinary drugs. The fifth level of the code indicates the chemical substance and consists of two digits.Д®xample: C03CA 01 furosemide Other ATC classification systems ATCvet The fourth level of the code indicates the chemical/therapeutic/pharmacological subgroup and consists of one letter.Д®xample: C03C A Sulfonamides Fifth level The third level of the code indicates the therapeutic/pharmacological subgroup and consists of one letter. The second level of the code indicates the therapeutic subgroup and consists of two digits. Systemic hormonal preparations, excluding sex hormones and insulinsДЄntineoplastic and immunomodulating agentsДЄntiparasitic products, insecticides and repellentsД®xample: C Cardiovascular system Second level The first level of the code indicates the anatomical main group and consists of one letter. In this system, drugs are classified into groups at five different levels: First level The WHO's system, having five levels, is an extension and modification of the EphMRA's. Its codes are organised into four levels.

This system, confusingly also called ATC, was initiated in 1971 by the European Pharmaceutical Market Research Association (EphMRA) and is being maintained by the EphMRA and Intellus. The ATC system is based on the earlier Anatomical Classification System, which is intended as a tool for the pharmaceutical industry to classify pharmaceutical products (as opposed to their active ingredients). As of, there are 6,331 codes in ATC the table below gives the count per level. The codes are semantic identifiers, meaning they depict information by themselves beyond serving as identifiers (namely, the codes depict themselves the complete lineage of parenthood).

The ATC classification system is a strict hierarchy, meaning that each code necessarily has one and only one parent code, except for the 14 codes at the topmost level which have no parents. This means that one drug can have more than one code, for example acetylsalicylic acid (aspirin) has A01AD05 ( WHO) as a drug for local oral treatment, B01AC06 ( WHO) as a platelet inhibitor, and N02BA01 ( WHO) as an analgesic and antipyretic as well as one code can represent more than one active ingredient, for example C09BB04 ( WHO) is the combination of perindopril with amlodipine, two active ingredients that have their own codes ( C09AA04 ( WHO) and C08CA01 ( WHO) respectively) when prescribed alone. Each bottom-level ATC code stands for a pharmaceutically used substance, or a combination of substances, in a single indication (or use). Different brands share the same code if they have the same active substance and indications. This pharmaceutical coding system divides drugs into different groups according to the organ or system on which they act, their therapeutic intent or nature, and the drug's chemical characteristics.

Atc4 code