This dataset comprises the document-level behavioural-specification assessments underpinning a structured interpretive review of the European Union Safe Hearts Plan and four supporting European cardiovascular policy documents. It is deposited as a separately citable resource to accompany the parent manuscript, "From behavioural risk to behavioural systems: a policy translation framework for strengthening implementation of the European Union Safe Hearts Plan and national cardiovascular strategies," submitted to the European Journal of Preventive Cardiology in May 2026. Five documents were reviewed: the EU Safe Hearts Plan (COM(2025) 1024 final), the EACH 2025 Roadmap, and three national cardiovascular strategies from Italy (2024–2027), the Czech Republic (2025–2030), and Romania (2025–2030). Each document was assessed against three minimum standards for behavioural specification in policy: (1) explicit articulation of the behavioural mechanisms through which policy targets are expected to be achieved; (2) distinction between processes of behavioural initiation and maintenance, with corresponding system-level provisions; and (3) specification of how behaviours across system actors are coordinated through incentives, workflows, or environmental structures. For each requirement, documents were classified as Present, Partial, or Absent, supported by extracted evidence and structured interpretive commentary. Across all five documents, behavioural mechanisms and cross-actor alignment were consistently assessed as Partial, while the distinction between initiation and maintenance was uniformly Absent. The deposit provides the full evidence base, classifications, and reasoning for each assessment, enabling readers to interrogate the analytic logic of the parent manuscript and supporting transparency, reuse, and further policy-translation research in cardiovascular health.