BI presentation mart for matched-payer contracting exploration. Grain: one row per canonical_payer_id, hospital_id, and exact comparison context (service_code_key, setting, billing_class, modifier_signature, comparison_methodology, drug unit context — equivalently service_context_key); negotiated dollar rates only. The negotiated amount is the payer-hospital representative: the median of the payer's deduplicated, unambiguous contract amounts for the exact context. Payer market medians are hospital-weighted and methodology-specific. Cash comparisons carry cash_comparison_status — a per-diem (daily) rate is never labeled above or below a cash amount. Unmatched payer names are excluded by design; they remain countable through the blocker summary.
Hospital category from the registry.