SB 1118 mandates that health benefit plans providing anesthesia coverage must cover the full duration of anesthesia services. It also requires that managed care plans maintain adequate provider networks, with patient treatment decisions being based on assessments made by the treating physician rather than insurance guidelines. Additionally, the bill directs health benefit plans to consider patient complexity and urgency of care when determining coverage and reimbursement. These provisions apply to new or renewed health plans starting January 1, 2026.