Left-armer Sidebottom, also in contention for a place in the final Ashes Test at The Oval next week, ripped through the Bears middle order with a devastating spell of swing bowling - taking his tally to 20 wickets in his last four matches at an average of 17.85.
"We will now look at all aspects of his bowling action and physical training regime in order to see what is causing the problem, " said Rob Campbell, the head of New Zealand's medical panel.
Shabbir Ahmed was unable to match his accuracy conceding runs at a rate of six and a half per over, but Razzaq cut through the middle order by bowling to a full length to finish with 4-33 from his 10 overs.