{"data":{"matter":{"matter_id":"mat_8cfcb6c2ddab81","slug":"change-healthcare-data-breach","name":"Change Healthcare Data Breach (2024)","category":"class_action","subcategory":"data_breach","status":"litigated","score":0.8,"score_30d":0.0,"velocity":0.0,"headline":"Change Healthcare 2024 breach - largest US healthcare data breach, ~190M affected; MDL underway","summary":"A February 2024 ransomware attack on Change Healthcare, a UnitedHealth Group / Optum subsidiary that processes a large share of US medical claims, exposed the protected health and personal information of an estimated 190 million people - the largest healthcare data breach in US history - and disrupted pharmacy and claims processing nationwide. The class actions were consolidated into a federal MDL in the District of Minnesota. Eligibility is broad: most Americans who have used insurance-billed care may have had data handled by Change Healthcare.","eligibility_hint":"Had medical or personal information handled by Change Healthcare / UnitedHealth (very broad - most insured US patients)","payout":{"band":"micro","low_cents":500,"high_cents":50000,"low_usd":5,"high_usd":500},"keywords":{"products":["data breach","protected health information","PHI","medical records","ransomware","identity theft"],"brands":["change healthcare","unitedhealth","optum","unitedhealth group"]},"links":{"primary":"https://www.changehealthcare.com/","self":"https://getclaimscout.com/api/v1/matters/change-healthcare-data-breach","html":"https://getclaimscout.com/matters/change-healthcare-data-breach","lp":null},"lifecycle":{"first_seen_iso":"2026-07-07T10:06:25Z","last_signal_iso":"2026-07-07T10:06:25Z","mdl_filed_iso":null,"settlement_announced_iso":null,"claims_open_iso":null,"claims_close_iso":null,"narrative_generated_iso":"2026-07-07T10:06:25Z"},"attached_cases_count":0,"embedding_model":null,"embedding_version":1,"schema_version":1},"attached_cases":[],"recent_signals":[]},"meta":{"api_version":"v1","schema_version":1,"self":"https://getclaimscout.com/api/v1/matters/change-healthcare-data-breach","docs":"https://getclaimscout.com/openapi.json","llms_txt":"https://getclaimscout.com/llms.txt"}}