Red Mushroom Block ID in Minecraft

The Red Mushroom Block ID in Minecraft Java Edition is minecraft:red_mushroom_block, the same on Bedrock. Before Java 1.13 it was 100.

/give command

Java 1.13 – 26.3
/give @p minecraft:red_mushroom_block 64
Gives a full stack of 64. Change the last number for a different amount.
Bedrock
/give @s red_mushroom_block 64
Place the block (Java)
/setblock ~ ~ ~1 minecraft:red_mushroom_block

Want enchantments, a name or lore? Open it in the give command generator.

Use these in /setblock or /fill, for example minecraft:red_mushroom_block[down=true,east=true].