The following rules written by the National Mah Jongg League are not found in their official guidebook, Mah Jongg Made Easy (MJME) 2024:

• About house rules. See ID53 
• Always read what’s in parenthesis. See ID46
• Bettor forgot to bet. See ID100
• Burying a tile in the wall. See ID103
• Commitment to Mah Jongg. See ID118
• East’s first discard can be a joker if East is playing a singles & pair hand. See ID42
• Joker exchanges when playing a concealed hand. See ID34
• Purse Is Empty, also known as PIE. See ID55
• Second left is passed in a pyramid. See ID 167
• What marks the beginning of a player’s turn. See ID104
• Placing tiles in order after a player’s exposes their Mah Jongg. See ID125