Claimed work with NHS? (7)

I believe the answer is:

medical

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'nhs?' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?

'claimed work' is the wordplay.
'work' indicates an anagram.
'claimed' is an anagram of 'MEDICAL'.

'with' acts as a link.

Can you help me to learn more?

(Other definitions for medical that I've seen before include "Relating to treatment rather than surgery" , "Examination of physical health" , "Claimed (anag.)" , "Relating to doctors" , "Thorough health check" .)

I've seen this clue in The Mirror.

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