• All episodes = none/blank
• Classic seasons (1963–1989) = C1, C2, etc.
• Revived series (2005–present) = N1, N2, etc.
• 2008–2010 specials = N4a
• 2013 specials = N7a
• 2022 specials = N13a
• 60th anniversary = N13b

This template's initial visibility currently defaults to autocollapse, meaning that if there is another collapsible item on the page (a navbox, sidebar, or table with the collapsible attribute), it is hidden apart from its title bar; if not, it is fully visible.

To change this template's initial visibility, the |state= parameter may be used:

• {{Doctor Who episodes|state=collapsed}} will show the template collapsed, i.e. hidden apart from its title bar.
• {{Doctor Who episodes|state=expanded}} will show the template expanded, i.e. fully visible.