483.90 - Physical Environment
#183 in National Citation Ranking
3 citations nationally (June 2025-June 2026)
An emergency electrical power system must supply power adequate at least for lighting all entrances and exits; equipment to maintain the fire detection, alarm, and extinguishing systems; and life support systems in the event the normal electrical supply is interrupted.
Source: CMS State Operations Manual, Appendix PP | 42 CFR § 483.90