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12.23.2025 Health Plan Ratings Data Does Not Match IDSS Rates Why don’t my IDSS rates match the Projected Ratings scoresheet?

Measure rates in the IDSS data workbook are multiplied by 100 and rounded to two decimal places, except for certain metrics (e.g., Observed/Expected, Count Variance, Expected Count), which are rounded to four decimal places.

HPR truncates final unrounded raw measure rates and The National All Lines of Business percentiles to 3 decimals.

For example, if the IDSS workbook displays a rate of 78.47, the HPR scoresheet will display .784 (raw rate truncated to 3 decimals).

This applies to the following Programs and Years: