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Level II codes are maintained by the US Centers for Medicare and Medicaid Services (CMS). There is some overlap between HCPCS codes and National Drug Code (NDC) codes, with a subset of NDC codes also in HCPCS, and vice versa. The CMS maintains a crosswalk from NDC to HCPCS in the form of an Excel file. The crosswalk is updated quarterly. [2]
Level III codes, also called local codes, were developed by state Medicaid agencies, Medicare contractors, and private insurers for use in specific programs and jurisdictions. The Health Insurance Portability and Accountability Act of 1996 (HIPAA) instructed CMS to adopt a standard coding systems for reporting medical transactions.
The CPT code revisions in 2013 were part of a periodic five-year review of codes. Some psychotherapy codes changed numbers, for example 90806 changed to 90834 for individual psychotherapy of a similar duration. Add-on codes were created for the complexity of communication about procedures.
Diagnosis-related group (DRG) is a system to classify hospital cases into one of originally 467 groups, [1] with the last group (coded as 470 through v24, 999 thereafter) being "Ungroupable".
The CPT Committee issues new codes twice each year. A separate committee, the Specialty Society Relative Value Scale Update Committee (RUC), [7] meets three times a year to set new values, [8] determines the Relative Value Units (RVUs) for each new code, and revalues all existing codes at least once every five years. The RUC has 29 members, 23 ...
Case mix groups are used as the basis for the Health Insurance Prospective Payment System (HIPPS) rate codes used by Medicare in its prospective payment systems. [ 1 ] Case mix groups are designed to aggregate acute care inpatients that are similar clinically and in terms of resource use.
A data structure file is available separately from CMS. [6] As of June 2024, the file download size is 947.84 MB, and the raw database file (npidata_pfile_20050523-20240512.csv) is 9.3 GB when extracted. [7] The size of the data has been steadily growing over time. The size of the raw database file was 8.8GB in June 2023, and 8.2GB in June 2022.
A unique physician identification number (UPIN) was a six-character alpha-numeric identifier used by Medicare to identify doctors in the United States.They were discontinued in June 2007 [1] and replaced by National Provider Identifier, or NPI numbers.