"We are providing a test version of the ICD-10 MS-DRG GROUPER Software, Version 40, so that the public can better analyze and understand the impact of the proposals included in the FY 2023 IPPS/LTCH PPS proposed rule. This test software reflects the proposed GROUPER logic for FY 2023 and includes the new diagnosis and procedure codes that are effective for FY 2023 as reflected in Table 6A.  New Diagnosis Codes - FY 2023 and Table 6B.  New Procedure Codes - FY 2023 associated with the proposed rule and does not include the diagnosis codes that are invalid beginning in FY 2023 as reflected in Table 6C.  Invalid Diagnosis Codes - FY 2023 associated with the proposed rule.  Tables 6A and 6B are available at:  https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/AcuteInpatientPPS/index.html.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Because the diagnosis codes no longer valid for FY 2023 are not reflected in the test software, we are making available a supplemental file in Table 6P.1a that includes the mapped Version 40 FY 2023 ICD-10-CM codes and the deleted Version 39.1 FY 2022 ICD-10-CM  codes that should be used for testing purposes with users available claims data.  Users have access to the test software allowing them to build case examples that reflect the proposals included in the proposed rule.  "
