Colorado HB 25-1002 establishes the first state-level outcomes data testing authority for behavioral health parity enforcement, creating a potential natural experiment for access-metric enforcement

Colorado HB 25-1002, effective January 1, 2026, grants the Insurance Commissioner explicit authority to promulgate rules establishing 'parity data testing using outcomes data' and 'documented access timelines for follow-up visits after an initial behavioral health encounter.' This is categorically different from MHPAEA's process-based requirements, which focus on coverage design (NQTLs, prior authorization procedures) rather than actual access outcomes. The law does not mandate specific metrics but creates the regulatory infrastructure to enforce parity based on whether patients can actually access care, not just whether coverage policies are facially equivalent. This addresses the two-level access problem: MHPAEA enforcement closes coverage gaps (level 1) but not reimbursement-driven access gaps (level 2). Colorado's approach attempts level 1.5 enforcement by requiring outcome-based demonstration of access parity. The law builds on Colorado's existing MHPAEA Parity Report infrastructure (conducted by HSAG), which already audits outcomes data including denial rates, prior authorization timelines, and access metrics across managed care entities. HB 25-1002 formalizes and extends this infrastructure with explicit enforcement authority. The natural experiment value depends on subsequent rulemaking defining specific outcomes metrics and enforcement thresholds, expected 2026-2027.