Counting the days: Exploring healthcare contact days during episodes of cancer care.

233 Background: Cancer diagnosis and treatment brings about not only emotional upheavals but also logistical hurdles of navigating a fragmented healthcare system. Little is known about the frequency of healthcare contact for cancer patients and its implications. Healthcare contact days, defined as the number of days a patient spends in direct contact with healthcare professionals outside of home, measures the patient’s interaction with the healthcare system. Methods: Using historical claims data (Part A institutional and Part B ambulatory claims) from the Enhancing Oncology Model (EOM) for 12 practices in The US Oncology Network covering the period between January 2019 to June 2022, we derived healthcare contact days per episode (6-month care periods initiating with the administration of chemotherapy), counting each unique date once. When patients encountered multiple care settings on a single date, the following hierarchy was used: inpatient (IP) > emergency room (ER) > skilled nursing facility (SNF)> hospice > ambulatory care. We further counted contact days for different services conducted during the ambulatory visits. Results: For the 75,246 episodes, an average of 31.9 days per episode (1 in every 6 days) were spent in healthcare contact. Cancer patients’ healthcare contact was predominantly within ambulatory care, and visits with oncology providers exceeded that with all other specialties. ER and IP visits, generally a representation of acute care events, accounted for <10% of the contact days. Conclusions: During cancer treatment, patients spend approximately one-sixth of their time in healthcare contact. The optimal frequency of contact, pattern of primary care support, care of comorbidities, and the interrelationship between acute care and clinician visits are apt for further exploration. Healthcare contact days can reflect different care delivery approaches between providers and may be a metric to assess both healthcare efficiency and accessibility. Understanding caregiver burden and social disparities associated with high contact days offers an opportunity to improve care coordination and streamline healthcare encounters while balancing patients’ care needs. CMMI Disclaimer: The statements contained in this document are solely those of the authors and do not necessarily reflect the views or policies of CMS. The authors assume responsibility for the accuracy and completeness of the information contained in this document. Healthcare contact days. Mean Percentiles 5 th -95 th Per Episode Healthcare Contact Days 31.9 10-65 Ambulatory Visits* 8-55 Chemotherapy 6.6 0-18 Imaging 2.7 0-7 Procedure 1.8 0-7 Radiation 2.4 0-23 Testing 11.8 3-25 Clinician Oncology 6 1-14 Other Specialties 3.4 0-10 Primary Care 2.8 0-8 Facility Visits ER 0.4 0-2 Hospice (Facility) 0.1 0-0 IP 2.7 0-16 SNF 0.8 0-0 *Ambulatory visits days are not mutually exclusive.