N.Y. Comp. Codes R. & Regs. tit. 7, § 301.2
(a) An incarcerated individual shall only be placed in segregated confinement for behavior that violates institutional rules and regulations involving conduct that poses an unreasonable risk to the health, safety or security of staff, incarcerated individuals, the facility, or the community by:
(8) engaging in conduct constituting a felony under the penal law.
Such disposition shall be for a designated period of time as specified by the hearing officer (section 254.7 of this Title) and in accordance with the disciplinary sanction guidelines as referenced in section 270.2 of this Title.