Yes, the word for base 10 is “decimal” [1] and digits do not have to be decimal digits. There are also binary digits “bits” [2], ternary digits “trits” [3], and so on.

[1]: https://en.wikipedia.org/wiki/Decimal

[2]: https://en.wikipedia.org/wiki/Bit

[3]: https://en.wikipedia.org/wiki/Ternary_numeral_system