Crossword Genius

Runs scams outside hospital (6)

Ross

I believe the answer is:

rushes

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

'runs' is the definition.
(I know this)

'scams outside hospital' is the wordplay.
'scams' becomes 'ruses' (I can't explain this - if you can you should give a lot more credence to this answer).
'outside' indicates putting letters inside.
'hospital' becomes 'H' (abbreviation for hospital).
'ruses' enclosing 'h' is 'RUSHES'.

Can you help me to learn more?

(Other definitions for rushes that I've seen before include "Moves hastily" , "Overcharges" , "Marsh plants with pithy stems" , "Charges too much" , "Moves quickly" .)

I've seen this clue in the Sydney Morning Herald.
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