{
 "id": "cms:76a714ad-3a2c-43ac-b76d-9dadf8f7d890",
 "slug": "medicare-part-b-spending-by-drug",
 "source": "data.cms.gov",
 "title": "Medicare Part B Spending by Drug",
 "summary": "Medicare Part B spending on drugs given in doctors' offices and other outpatient settings, with average spending per dosage unit and change over time.",
 "description": "The Medicare Part B by Drug dataset presents information on spending for drugs administered in doctors’ offices and other outpatient settings by physicians and other healthcare providers to Medicare Part B enrollees. The dataset focuses on average spending per dosage unit and change in average spending per dosage unit over time. It also includes consumer-friendly descriptions of the drug uses, clinical indications, and manufacturer(s). Drug spending metrics for Part B drugs represent the full value of the product, including the Medicare payment and beneficiary liability. All Part B drug spending metrics are calculated at the HCPCS level.",
 "aliases": [
  "part b drug spending",
  "infused drugs",
  "physician administered drugs",
  "part b drug costs"
 ],
 "keywords": [
  "Medicare",
  "Original Medicare",
  "Drugs"
 ],
 "themes": [
  "Medicare"
 ],
 "topics": [
  "drugs",
  "spending-utilization",
  "doctors"
 ],
 "category": "summary-statistics-on-use-and-payments",
 "publisher": "Office of Enterprise Data and Analytics (OEDA)",
 "contact": "IPAG_Data_Products@cms.hhs.gov",
 "landing_url": "https://data.cms.gov/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-part-b-spending-by-drug",
 "csv_url": "https://data.cms.gov/sites/default/files/2026-06/6616fc91-eb70-404c-9f27-1448e47a3a73/DSD_PTB_RY26_P06_V10_DYT24_HCPCS-%20260602.csv",
 "api_url": "https://data.cms.gov/data-api/v1/dataset/76a714ad-3a2c-43ac-b76d-9dadf8f7d890/data",
 "api_kind": "cms-data-api",
 "preview_url": "https://data.cms.gov/data-api/v1/dataset/76a714ad-3a2c-43ac-b76d-9dadf8f7d890/data?size=10",
 "dictionary_url": "https://data.cms.gov/resources/medicare-part-b-spending-by-drug-data-dictionary",
 "dictionary_kind": "page",
 "methodology_urls": [
  "https://data.cms.gov/resources/medicare-part-b-spending-by-drug-methodology"
 ],
 "state_column": null,
 "row_count": 799,
 "posted": "2026-06-25",
 "modified": "2026-06-25",
 "period_start": "2024-01-01",
 "period_end": "2024-12-31",
 "latest_period": "2024-01-01 to 2024-12-31",
 "cadence": "annually",
 "next_update": null,
 "versions": [
  {
   "label": "2024-01-01",
   "uuid": "76a714ad-3a2c-43ac-b76d-9dadf8f7d890",
   "posted": "2026-06-25",
   "period_start": "2024-01-01",
   "period_end": "2024-12-31"
  }
 ],
 "columns": [
  {
   "name": "HCPCS_Cd",
   "label": "Medicare Billing Code (HCPCS Code)",
   "type": "string",
   "meaning": "Healthcare Common Procedure Coding System (HCPCS) code used to identify the drug furnished by the provider.",
   "source": "cms-dictionary"
  },
  {
   "name": "HCPCS_Desc",
   "label": "Drug Description",
   "type": "string",
   "meaning": "Description of the HCPCS code for the drug furnished by the provider.",
   "source": "cms-dictionary"
  },
  {
   "name": "Brnd_Name",
   "label": "Brand Name",
   "type": "string",
   "meaning": "Name of the drug furnished by the provider. This includes both brand names (drugs that have a trademarked name) and generic names (drugs that do not have a trademarked name). ' * ' Indicates multiple brand and/or generic names for a specific HCPCS code. See “Medicare Part B Spending by Drug-Manufacturer and Drug Use Information” supporting document for additional names. ' ** ' Indicates brand/generic names unavailable. Name reflects the HCPCS short description.",
   "source": "cms-dictionary"
  },
  {
   "name": "Gnrc_Name",
   "label": "Generic Name",
   "type": "string",
   "meaning": "A term referring to the chemical ingredient of a drug rather than the trademarked brand name under which the drug is sold. ' * ' Indicates multiple brand and/or generic names for a specific HCPCS code. See “Medicare Part B Spending by Drug-Manufacturer and Drug Use Information” supporting document for additional names. ' ** ' Indicates brand/generic names unavailable. Name reflects the HCPCS short description.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Spndng_2020",
   "label": "2020 Total Spending",
   "type": "number",
   "meaning": "Aggregate drug spending for the Part B program during 2020.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Dsg_Unts_2020",
   "label": "2020 Total Dosage Units",
   "type": "number",
   "meaning": "The sum of the dosage units of medication dispensed in 2020 (e.g. number of tablets, grams, milliliters or other units). For Part B, the quantity of a drug in a dosage unit is the same as the quantity of the drug in a HCPCS billing unit.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Clms_2020",
   "label": "2020 Total Claims",
   "type": "number",
   "meaning": "Number of claims for each drug in 2020.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Benes_2020",
   "label": "2020 Total Beneficiaries",
   "type": "number",
   "meaning": "Number of Medicare Part B fee-for-service beneficiaries utilizing the drug during 2020.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Dsg_Unt_2020",
   "label": "2020 Average Spending Per Dosage Unit",
   "type": "number",
   "meaning": "Part B drug spending in 2020 divided by the number of dosage units in 2020.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Clm_2020",
   "label": "2020 Average Spending Per Claim",
   "type": "number",
   "meaning": "Part B drug spending in 2020 divided by the number of claims in 2020.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Bene_2020",
   "label": "2020 Average Spending Per Beneficiary",
   "type": "number",
   "meaning": "Total Part B drug costs in 2020 divided by the number of unique beneficiaries utilizing the drug during 2020.",
   "source": "cms-dictionary"
  },
  {
   "name": "Outlier_Flag_2020",
   "label": "2020 Outlier Flag",
   "type": "number",
   "meaning": "Yearly outlier flag variable, which is set to “1” when a drug’s Average Spending per Dosage Unit is substantially impacted by outlier records in a given year. These potentially anomalous drugs are identified as outliers so that users can exercise caution when interpreting results. See the methodology document for additional details.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Spndng_2021",
   "label": "2021 Total Spending",
   "type": "number",
   "meaning": "Aggregate drug spending for the Part B program during 2021.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Dsg_Unts_2021",
   "label": "2021 Total Dosage Units",
   "type": "number",
   "meaning": "The sum of the dosage units of medication dispensed in 2021 (e.g. number of tablets, grams, milliliters or other units). For Part B, the quantity of a drug in a dosage unit is the same as the quantity of the drug in a HCPCS billing unit.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Clms_2021",
   "label": "2021 Total Claims",
   "type": "number",
   "meaning": "Number of claims for each drug in 2021.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Benes_2021",
   "label": "2021 Total Beneficiaries",
   "type": "number",
   "meaning": "Number of Medicare Part B fee-for-service beneficiaries utilizing the drug during 2021.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Dsg_Unt_2021",
   "label": "2021 Average Spending Per Dosage Unit",
   "type": "number",
   "meaning": "Part B drug spending in 2021 divided by the number of dosage units in 2021.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Clm_2021",
   "label": "2021 Average Spending Per Claim",
   "type": "number",
   "meaning": "Part B drug spending in 2021 divided by the number of claims in 2021.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Bene_2021",
   "label": "2021 Average Spending Per Beneficiary",
   "type": "number",
   "meaning": "Total Part B drug costs in 2021 divided by the number of unique beneficiaries utilizing the drug during 2021.",
   "source": "cms-dictionary"
  },
  {
   "name": "Outlier_Flag_2021",
   "label": "2021 Outlier Flag",
   "type": "number",
   "meaning": "Yearly outlier flag variable, which is set to “1” when a drug’s Average Spending per Dosage Unit is substantially impacted by outlier records in a given year. These potentially anomalous drugs are identified as outliers so that users can exercise caution when interpreting results. See the methodology document for additional details.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Spndng_2022",
   "label": "2022 Total Spending",
   "type": "number",
   "meaning": "Aggregate drug spending for the Part B program during 2022.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Dsg_Unts_2022",
   "label": "2022 Total Dosage Units",
   "type": "number",
   "meaning": "The sum of the dosage units of medication dispensed in 2022 (e.g. number of tablets, grams, milliliters or other units). For Part B, the quantity of a drug in a dosage unit is the same as the quantity of the drug in a HCPCS billing unit.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Clms_2022",
   "label": "2022 Total Claims",
   "type": "number",
   "meaning": "Number of claims for each drug in 2022.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Benes_2022",
   "label": "2022 Total Beneficiaries",
   "type": "number",
   "meaning": "Number of Medicare Part B fee-for-service beneficiaries utilizing the drug during 2022.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Dsg_Unt_2022",
   "label": "2022 Average Spending Per Dosage Unit",
   "type": "number",
   "meaning": "Part B drug spending in 2022 divided by the number of dosage units in 2022.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Clm_2022",
   "label": "2022 Average Spending Per Claim",
   "type": "number",
   "meaning": "Part B drug spending in 2022 divided by the number of claims in 2022.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Bene_2022",
   "label": "2022 Average Spending Per Beneficiary",
   "type": "number",
   "meaning": "Total Part B drug costs in 2022 divided by the number of unique beneficiaries utilizing the drug during 2022.",
   "source": "cms-dictionary"
  },
  {
   "name": "Outlier_Flag_2022",
   "label": "2022 Outlier Flag",
   "type": "number",
   "meaning": "Yearly outlier flag variable, which is set to “1” when a drug’s Average Spending per Dosage Unit is substantially impacted by outlier records in a given year. These potentially anomalous drugs are identified as outliers so that users can exercise caution when interpreting results. See the methodology document for additional details.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Spndng_2023",
   "label": "2023 Total Spending",
   "type": "number",
   "meaning": "Aggregate drug spending for the Part B program during 2023.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Dsg_Unts_2023",
   "label": "2023 Total Dosage Units",
   "type": "number",
   "meaning": "The sum of the dosage units of medication dispensed in 2023 (e.g. number of tablets, grams, milliliters or other units). For Part B, the quantity of a drug in a dosage unit is the same as the quantity of the drug in a HCPCS billing unit.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Clms_2023",
   "label": "2023 Total Claims",
   "type": "number",
   "meaning": "Number of claims for each drug in 2023.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Benes_2023",
   "label": "2023 Total Beneficiaries",
   "type": "number",
   "meaning": "Number of Medicare Part B fee-for-service beneficiaries utilizing the drug during 2023.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Dsg_Unt_2023",
   "label": "2023 Average Spending Per Dosage Unit",
   "type": "number",
   "meaning": "Part B drug spending in 2023 divided by the number of dosage units in 2023.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Clm_2023",
   "label": "2023 Average Spending Per Claim",
   "type": "number",
   "meaning": "Part B drug spending in 2023 divided by the number of claims in 2023.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Bene_2023",
   "label": "2023 Average Spending Per Beneficiary",
   "type": "number",
   "meaning": "Total Part B drug costs in 2023 divided by the number of unique beneficiaries utilizing the drug during 2023.",
   "source": "cms-dictionary"
  },
  {
   "name": "Outlier_Flag_2023",
   "label": "2023 Outlier Flag",
   "type": "number",
   "meaning": "Yearly outlier flag variable, which is set to “1” when a drug’s Average Spending per Dosage Unit is substantially impacted by outlier records in a given year. These potentially anomalous drugs are identified as outliers so that users can exercise caution when interpreting results. See the methodology document for additional details.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Spndng_2024",
   "label": "2024 Total Spending",
   "type": "number",
   "meaning": "Aggregate drug spending for the Part B program during 2024.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Dsg_Unts_2024",
   "label": "2024 Total Dosage Units",
   "type": "number",
   "meaning": "The sum of the dosage units of medication dispensed in 2024 (e.g. number of tablets, grams, milliliters or other units). For Part B, the quantity of a drug in a dosage unit is the same as the quantity of the drug in a HCPCS billing unit.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Clms_2024",
   "label": "2024 Total Claims",
   "type": "number",
   "meaning": "Number of claims for each drug in 2024.",
   "source": "cms-dictionary"
  },
  {
   "name": "Tot_Benes_2024",
   "label": "2024 Total Beneficiaries",
   "type": "number",
   "meaning": "Number of Medicare Part B fee-for-service beneficiaries utilizing the drug during 2024.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Dsg_Unt_2024",
   "label": "2024 Average Spending Per Dosage Unit",
   "type": "number",
   "meaning": "Part B drug spending in 2024 divided by the number of dosage units in 2024.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Clm_2024",
   "label": "2024 Average Spending Per Claim",
   "type": "number",
   "meaning": "Part B drug spending in 2024 divided by the number of claims in 2024.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_Spndng_Per_Bene_2024",
   "label": "2024 Average Spending Per Beneficiary",
   "type": "number",
   "meaning": "Total Part B drug costs in 2024 divided by the number of unique beneficiaries utilizing the drug during 2024.",
   "source": "cms-dictionary"
  },
  {
   "name": "Outlier_Flag_2024",
   "label": "2024 Outlier Flag",
   "type": "number",
   "meaning": "Yearly outlier flag variable, which is set to “1” when a drug’s Average Spending per Dosage Unit is substantially impacted by outlier records in a given year. These potentially anomalous drugs are identified as outliers so that users can exercise caution when interpreting results.See the methodology document for additional details.",
   "source": "cms-dictionary"
  },
  {
   "name": "Avg_DY24_ASP_Price",
   "label": "Average Sales Price",
   "type": "number",
   "meaning": "The average of the quarterly payment amount listed on the ASP Drug Pricing files for the most recent year, including the 6 percent or other applicable add-on.",
   "source": "cms-dictionary"
  },
  {
   "name": "Chg_Avg_Spndng_Per_Dsg_Unt_23_24",
   "label": "Change in Average Spending Per Dosage Unit (2023-2024)",
   "type": "number",
   "meaning": "The percent change in average spending per dosage unit from the prior year.",
   "source": "cms-dictionary"
  },
  {
   "name": "CAGR_Avg_Spnd_Per_Dsg_Unt_20_24",
   "label": "Annual Growth Rate in Average Spending Per Dosage Unit (2020-2024)",
   "type": "number",
   "meaning": "The constant average change in spending per unit over the most recent five years of data availability, calculated using the compound annual growth rate (CAGR).",
   "source": "cms-dictionary"
  }
 ],
 "caveats": [
  "Metrics are calculated at the HCPCS code level and include both the Medicare payment and what the patient owes."
 ],
 "curated": true,
 "license": "https://www.usa.gov/government-works",
 "detail_key": "76a714ad-3a2c-43ac-b76d-9dadf8f7d890|2026-06-25",
 "checked": "2026-10-25",
 "source_name": "data.cms.gov"
}