483.90 - Physical Environment
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1 citation nationally (June 2025-June 2026)
Buildings must have an outside window or outside door in every sleeping room, and for any building constructed after July 5, 2016 the sill height must not exceed 36 inches above the floor. Windows in atrium walls are considered outside windows for the purposes of this requirement.
Source: CMS State Operations Manual, Appendix PP | 42 CFR § 483.90