The Centers for Medicare & Medicaid Services has updated its ICD-10 end-to-end testing results to include participation rates by health care provider type. The volunteer participants represented a broad cross-section of provider, claim and submitter types. Nearly one-third of overall participants were hospitals. Health care claims must include ICD-10 codes for medical diagnoses and inpatient hospital procedures beginning Oct. 1. Providers can continue to participate in acknowledgement testing any time prior to the implementation date. For more on the transition to ICD-10, including a checklist for the ICD-10 homestretch, visit www.aha.org or www.cms.gov.