The following is a proposed Wikipedia policy, guideline, or process. The proposal may still be in development, under discussion, or in the process of gathering consensus for adoption.
By default, bottom-level subcategories correspond to fourth-level ATC codes.
For small ATC groups, bottom-level subcategories correspond to third-level ATC codes. In this case, the fourth-level codes are not shown in these tables.
Italics
ATC codes in italics should not be used directly to categorise articles; rather, the articles should be placed in the appropriate bottom-level subcategories.
Categories in italics should not contain article pages since they do not correspond to any bottom-level categories.
A slash (—) in the category column signifies that there is no corresponding category, mostly because the ATC code does not contain any drugs, or because it only contains drug combinations which are not likely to get their own Wikipedia articles.
