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The Generic Product Identifier (GPI) is a 14-character hierarchical classification system that identifies drugs down to the unique interchangeable product regardless of manufacturer or package size. The code consists of seven subsets, each providing increasingly more specific information about a drug available with a prescription in the United States. The first 10 digits of the GPI define the therapeutic class code and the last 4 digit define route, dosage or strength. For example GPI 58200060100105 is for the drug Nortriptyline HCL cap 10 mg (an antidepressant) and can be further classified as follows: 58 Drug group Antidepressants 58-20 Drug class Tricyclic agents 58-20-00 Drug sub-class 58-20-00-60 Drug name Nortriptyline 58-20-00-60-10 Drug name extension Hydochloride 58-20-00-60-10-01 Dosage form Capsule 58-20-00-60-10-01-05 Strength 10 mg Alternate drug classification systems include the Cerner Multum's Lexicon database, American Health Formulary System (AHFS) Drug Information, National Institute of Health's RxNorm, First DataBank's Generic Sequence Number (GSN) and National Drug Code (NDC). Wolters Kluwer provides a database known as Medi-Span that links this code to other prescription drug classification codes commonly used for payment and analysis in the United States Health Care System. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Generic Product Identifier」の詳細全文を読む スポンサード リンク
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