Intended for use by service providers and clinical information system vendors, this document contains:

• Descriptions of foundation data concepts and other related data

• A full description of each measure, including inclusions, exclusions and counting rules

• Measure code disaggregation points

• The nKPI Condition Coding Framework

• The nKPI Pathology Coding Framework

• Variances in vendor implementation (selected measures)

Current version: Specifications for nKPI and OSR reporting v18.0 (published February 2025).