# Treatment Categories

Folders a practice uses to group its treatment catalogue. List and retrieve treatment categories. Treatment categories are practice-wide and are not scoped to a site.

 - [GET /treatment_categories](https://docs.api.dentally.com/docs/versions/2026-01-01/nexgen/treatment-categories/list-treatment-categories.md): Returns a **paginated** list of treatment categories for the practice identified by `X-Practice-Id`. Treatment categories are the folders a practice uses to group its treatment catalogue. **Practice-w
 - [GET /treatment_categories/{id}](https://docs.api.dentally.com/docs/versions/2026-01-01/nexgen/treatment-categories/get-treatment-category.md): Returns the single treatment category matching `id` for the practice identified by `X-Practice-Id`. The identifier is the same `id` returned when listing treatment categories. **Practice-wide:** treat