The Healthcare Cost and Utilization Project (HCUP) software tools for the International Classification of Diseases, Tenth Revision, Clinical Modification/Procedure Coding System (ICD-10-CM/PCS) are updated annually by Federal fiscal year (FY) to accommodate new or revised ICD-10-CM/PCS codes, as well as to add corrections or modifications based on new clinical guidance for the use of ICD-10-CM/PCS codes. The Agency for Healthcare Research and Quality (AHRQ) has released the following updated HCUP software tools valid for ICD-10-CM/PCS codes through FY 2023:

• Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses, v2023.1, aggregates more than 70,000 ICD-10-CM diagnosis codes into over 530 clinical categories across 22 body systems.
• Clinical Classifications Software Refined (CCSR) for ICD-10-PCS Procedures, v2023.1, aggregates more than 80,000 procedure codes into over 320 clinically meaningful categories across 31 clinical domains.
• Elixhauser Comorbidity Software Refined for ICD-10-CM and its associated Elixhauser Comorbidity Indices Refined for ICD-10-CM, v2023.1, assigns data elements that identify different pre-existing conditions based on secondary diagnoses (i.e., comorbidities) listed on hospital administrative data; and provides two composite scores based on the 38 comorbidity measures that predict risk of in-hospital mortality and risk of 30-day, all-cause readmission.
• Chronic Condition Indicator Refined (CCIR) for ICD-10-CM, v2023.1, identifies a diagnosis as indicating a chronic condition. With this update, the tool has transitioned out of beta status.
• Procedure Classes Refined for ICD-10-PCS, v2023.1, identifies (1) whether a procedure is diagnostic or therapeutic and (2) whether a procedure is expected to be performed in an operating room.

See the Research Tools page of the HCUP-US website for more information on the changes to each tool.