100 is too old for insurance risks (8)

I believe the answer is:

coverage

I'm a little stuck... Click here to teach me more about this clue!

'for insurance risks' is the definition.
I can't tell whether this definition defines the answer.

'100 is too old' is the wordplay.
'100' becomes 'c' (Roman numeral).
'is too old' becomes 'overage' (I've seen this before).
'c'+'overage'='COVERAGE'

Can you help me to learn more?

(Other definitions for coverage that I've seen before include "insurance" , "Media reporting" , "policy provision" , "News reports" , "level of press attention" .)

I've seen this clue in The Irish Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.