Source:http://linkedlifedata.com/resource/umls/id/C1875307
NDFRT: ABBREVIATION INTERPRETATION NDC NATIONAL DRUG CODE NEC NOT ELSEWHERE CLASSIFIED Descriptive comments are included only when the classification system itself is not self-explanatory. The VA Drug Classification system classifies drug products, not generic ingredients. Drug products with local effects are classified by route of administration (e.g., dermatological, ophthalmic). If a product is not classified by route of administration, it is classified in most instances under a specific chemical or pharmacological classification (e.g., beta-blockers , cephalosporins). If a product is not classified by route of administration, or chemical or pharmacological subclassification, it may be classified under a therapeutic category (e.g., antilipemic agents, antiparkinson agents). Most combination products are found in the "other" subclassification under each major classification unless a specific subcategory for combination products exists or a descriptive comment indicates inclusion elsewhere. In addition, prod