The changes in Bell's classification included him being placed as a maximum security risk.
Bell, who is now a low-medium security classification again, has repeated throughout the two-day hearing at the High Court at Auckland that there was no evidence supporting the allegations.
He also called the suggestion he had been involved in smuggling contraband in prison a "cheap shot" and claimed the CCTV footage exonerated him.
Today in court he held up two small plastic bags containing mints in the dock to show the kind of bag that he passed and conceded he gave another prisoner a phone number.
"It is prisoner subculture," Bell said.
He had previously explained prisoners pass things to each other every day - "This is the way of life in prison."
Acting for Corrections, lawyer Camille Wrightson said Bell had claimed in his case that there was a breach of his right to be free from discrimination.
In his submission there may have been "unconscious bias" against his Māori heritage, intellectual impairment and criminal history.
Corrections denied this and the suggestion the restrictions imposed upon Bell were arbitrary.
"We also believe Mr Bell was treated with dignity and humanity throughout this process," Wrightson said.
Also acting for Corrections, lawyer Helen Carrad said "very experienced staff" had considered the increase to maximum and were best placed to make such an assessment.
It was fair and reasonable given the need to act promptly in light of the allegations, she said.
"Security decisions are inherently about risk not certainty."
If the court considered there was any reviewable error in the decision relating to the increase to the maximum that was cured by the reconsideration, she said.
Justice Mark Woolford has reserved his decision on the case.
