In the icd-10-cm index to diseases and injuries (alphabetic index), what is the code next to the main term called

In the ICD-10-CM index to diseases and injuries (alphabetic index), the code next to the main term called a default code. It would represent the condition that is commonly related with the main term. In a case where the condition is not documented in a record without any information, then this code should be assigned.

I'd say 8. i'd u don't so what u should u don't get what u want.