The condition category variables are claims-based algorithms to indicate whether treatment for the condition appears to have taken place. 

All of the variables listed on this page are currently available in the Master Beneficiary Summary File (MBSF)Medicare-Medicaid Linked Enrollee Analytic Data Source (MMLEADS) and Medicaid Enrollee Supplemental File (MESF).

Researchers may request data for a specific, predefined cohort based on any of the categories on this page.


CCW Chronic Conditions

There are twenty-seven chronic condition categories, available for file years 1999 - forward.

Original Version - 21 CCW Chronic Conditions for file years 1999-2010

This original version is no longer available, but listed here for reference purposes.  These conditions were in the previously available Beneficiary Annual Summary File (BASF).



Other Chronic or Potentially Disabling Conditions

These CMS-specified conditions are designed to enhance research of the Medicare-Medicaid dually enrolled population.


Other Chronic or Potentially Disabling Conditions

 ADHD, Conduct Disorders, and Hyperkinetic Syndrome  Personality Disorders
 Anxiety Disorders  Post-Traumatic Stress Disorder (PTSD)
 Autism Spectrum Disorders  Pressure and Chronic Ulcers
 Bipolar Disorder  Schizophrenia
 Cerebral Palsy  Schizophrenia and Other Psychotic Disorders
 Cystic Fibrosis and Other Metabolic Developmental Disorders  Sensory - Blindness and Visual Impairment
 Depressive Disorders  Sensory - Deafness and Hearing Impairment
 Epilepsy  Spina Bifida and Other Congenital Anomalies of the Nervous System
 Fibromyalgia, Chronic Pain and Fatigue  Spinal Cord Injury
 Human Immunodeficiency Virus and/or Acquired Immunodeficiency Syndrome (HIV/AIDS) *  Tobacco Use
 Intellectual Disabilities and Related Conditions  Traumatic Brain Injury and Nonpsychotic Mental Disorders due to Brain Damage
 Learning Disabilities  Viral Hepatitis (General), including:
  • Hepatitis A
  • Hepatitis B (acute or unspecified)
  • Hepatitis B (chronic)
  • Hepatitis C (acute)
  • Hepatitis C (chronic)
  • Hepatitis C (unspecified)
  • Hepatitis D
  • Hepatitis E
 Leukemias and Lymphomas
 Liver Disease, Cirrhosis and Other Liver Conditions
 Migraine and Chronic Headache
 Mobility Impairments
 Multiple Sclerosis and Transverse Myelitis
 Muscular Dystrophy
 Other Developmental Delays
 Peripheral Vascular Disease (PVD)

* There are also variables that measure care (largely Medicaid services) provided to individuals with HIV/AIDS. These variables are not included in the Master Beneficiary Summary File (MBSF) or Medicaid Enrollee Supplemental File (MESF).