CPAP machines report data to insurers but hide it from patients

Modern CPAP machines for sleep apnea transmit detailed nightly usage data (mask leak rates, apnea-hypopnea index, pressure adjustments) directly to insurance companies and durable medical equipment suppliers via cellular modems, but patients typically cannot access their own granular data without third-party hacking tools like OSCAR. Insurance companies use this data to deny continued CPAP coverage if usage falls below 4 hours per night for 70% of nights, yet patients cannot see the same data to dispute discrepancies or optimize their therapy. A patient can lose their $2,000 device and therapy coverage based on data they were never given access to review. This persists because device manufacturers (primarily ResMed and Philips) designed their data platforms for payer compliance reporting rather than patient engagement, and HIPAA right-of-access enforcement for device-generated data is virtually nonexistent.