Search form

MarketScan Commerical Claims and Encounters/MarketScan Medicare Supplemental and Coordination of Benefits

Database Name: MarketScan® Commercial Claims and Encounters and Medicare Supplemental and Coordination of Benefits


Data Source

Individual level healthcare claims from employers, health plans, hospitals, Medicare; comes from Thomson Reuters.

Overview of data contents

Individual level healthcare claims including pharmacy claims integrated across all care providers across practice settings.

Patient ages included


Practice setting

All sites including inpatient, outpatient, ER.

Date range available

Data is longitudinal, started in 1996 and data collection is ongoing.

Relevant Work

Example publications

Cohen SM, Kim J, Roy N, Courey M. Prescribing patterns of primary care physicians an otolaryngologists in the management of laryngeal disorders. Otolaryngol Head Neck Surg. 2013;149:118-25.

Cohen SM, Kim J, Roy N, Asche C, Courey M. Factors Influencing the Healthcare Expenditures of Patients with Laryngeal Disorders. Otolaryngol Head Neck Surg. 2012;147:1099-107.

Cohen SM, Kim J, Roy N, Asche C, Courey M. Direct health care costs of laryngeal diseases and disorders. Laryngoscope. 2012;122:1582-8.


Cost estimate(s)

Database is not free, expense dependent on size of dataset-based on numbers of years of data and ICD-9 codes of interest which are used to pull the dataset. Cost also increases for each database searched (i.e., Commercial Claims, Medicare, etc.), cost for 5 years of data with roughly 500,000 unique patients with specific ICD-9 codes was $25K.

Contact/website information

MarketScan® is a registered trademark of Thomson Reuters (Healthcare) Inc.


Ease of use

This dataset requires an experienced programmer-initial data may need to be cleaned of duplicate patients and commercial and Medicare databases merged if using both. Data management is time consuming. A data dictionary is provided with definitions of all variables including Red Book which contains medications and their identifiers.

Data analysis

Longitudinal data is provided. Weighting is also provided. Need to determine cohort and and variables of interest and definitions a priori to minimize need for reprogramming due to the time consuming nature of the data analysis.


Longitudinal data linked at the individual level across providers including cost information.


Length of time for data management. Original data must be destroyed after 12 months. Datasets created from the original data can be used as long as consistent with original proposal/contract with Thomson Reuters. No ethnicity data (only in the Medicaid portion, at an additional cost).