PRCCSR_VERSION indicates the version (yyyy.n) of the Clinical Classifications Software Refined (CCSR) for ICD-10-PCS procedures where yyyy indicates the fiscal year for ICD-10-PCS procedure codes and n indicates the release number within the fiscal year. The CCSR for ICD-10-PCS procedures is valid for codes from October 1, 2015 (the start of ICD-10-PCS) through September of the designated fiscal year. For more information, please refer to the CCSR for ICD-10-PCS procedures, including a log of changes between versions, is available on the HCUP User Support web site under Tools and Software.