This file contains CCS information submitted for the third through eleventh OCM performance periods (episodes initiating July 2, 2017 - December 31, 2021), primarily including data reported by OCM participants to the Oncology Care Model Registry (OCMR).

What does this file include? (variable highlights)

• Beneficiary ID
• ICD10 Cancer Diagnosis Code
• Initial Diagnosis Date
• Current Clinical Status coded into one of 10 categories
• Current Clinical Status Date

Special Considerations

• Many beneficiaries have multiple CCS records, within an episode and across multiple episodes.
• The Clinical and Staging data file and the Current Clinical Status data file can be linked by the Beneficiary ID, ICD10 Cancer Diagnosis Code Reported by Participant, and the Initial Diagnosis Date.
• Researchers may wish to obtain Medicare Fee-for-Service claims data for a population they identify within the OCM data files. The Beneficiary ID can be used to link to Medicare claims.

This file contains data for the third through eleventh OCM performance periods (episodes initiating July 2, 2017 - December 31, 2021), primarily including data reported by OCM participants to the Oncology Care Model Registry (OCMR).

What does this file include? (variable highlights)

• Beneficiary ID
• Episode Beginning Date
• Episode Ending Date
• OCM-Assigned Practice ID
• OCM-Assigned Cancer Type
• OCM 6-Month Episode Performance Period
• ICD10 Cancer Diagnosis Code
• Primary Tumor Staging
• Nodal Disease Staging
• Metastasis Staging
• Histology

Special Considerations

• There is one row per episode and beneficiaries can appear multiple times in the file depending on the number of 6-month episodes initiated.
• The Clinical and Staging data file and the Current Clinical Status data file can be linked by the Beneficiary ID, ICD10 Cancer Diagnosis Code Reported by Participant, and the Initial Diagnosis Date.
• The file does not include any treatment data such as surgery, radiation, hormonal therapy or chemotherapy. Researchers may wish to obtain Medicare claims data for a population they identify within the OCM data files. The Beneficiary ID can be used to link to Medicare claims.

Under OCM, physician practices entered into payment arrangements with CMS that included financial and performance accountability for episodes of care surrounding chemotherapy administration to cancer patients. The practices which participated in OCM committed to providing enhanced services to Medicare beneficiaries such as care coordination, navigation, and adherence to national treatment guidelines for care.

OCM participants submitted staging and clinical data to the OCM Data Registry, a web-based data submission and collection tool, for their attributed episodes.

The data from the Oncology Care Model (OCM) is a set of two linkable files, which are both provided for a research request (i.e., cannot be requested separately):

• The Clinical and Staging file contains practice-reported staging and clinical data, which includes basic information on the episodes attributed to model participants.
• The Current Clinical Status file contains practice-reported, cancer-specific clinical and staging patient status values.

The data includes information about the care episodes, the practice ID to which they were attributed, episode beginning and end dates, and the clinical and staging characteristics.

The MBISG algorithm was developed by CMS to augment existing race and ethnicity data from the Social Security Administration and produce more accurate indirect estimates of the race and ethnicity of the Medicare beneficiary population. The MBISG data includes a set of probabilities that the beneficiary is a member of six racial and ethnic groups: American Indian or Alaska Native (AI/AN), Asian American and Native Hawaiian or Other Pacific Islander (AA and NHPI), Black, Hispanic, Multiracial, or White. MBISG probabilities are based on U.S. Census Bureau data on race and ethnicity distributions by surname and Census block group, as well as CMS’s race and ethnicity administrative data and additional administrative elements including first name, demographics, and coverage characteristics.

The MBISG data consists of a single file that contains the race and ethnicity probabilities of Medicare beneficiaries enrolled on March 1, 2023. In addition, the file contains a variable that represents the probability that a beneficiary prefers Spanish language survey material.

The cohort may be linked to claims or Medicare eligibility data using the Beneficiary ID.

What does this file include? (variable highlights)

• Beneficiary ID
• Data File Reference Date
• Race/Ethnicity Probabilities (6 variables)
• Predicted Spanish Preference Category

Special Considerations

The MBISG dataset is separate from CCW’s Master Beneficiary Summary File (MBSF), which is partitioned by calendar year. The MBISG dataset will overlap with MBSF files, but the cohort does not match exactly to any given MBSF calendar year dataset.

For more information about the MBISG data, please contact mbisg@cms.hhs.gov.