BI presentation mart for hospital-vs-market service comparisons. Grain: one row per hospital and exact comparison context - hospital_id, service_code_key, setting, billing_class, modifier_signature, amount_kind, comparison_methodology, and drug unit context (equivalently hospital_id + service_context_key). The hospital's representative amount is ONE value per exact context (for negotiated rates: the median of its deduplicated, unambiguous payer-contract amounts), compared against four peer groups (all corpus hospitals, same state, same hospital type, same health system), each hospital-weighted and gated by its own 3-hospital floor. Position bands describe one service context, not the hospital overall.
Contracts that produced a representative amount (negotiated rates only).