It's Tuesday News Day and here is what we have on tap.

• Quest Diagnostics data breach – the industry sounds off Bill Siwicki HealthcareITnews.com
• Quest, LabCorp, AMCA Sued For Breach Impacting Over 19 Million Sergiu Gatlan bleepingcomputer.com
• HIMSS to ONC and CMS: Open APIs key enablers for innovation, competition Mike Miliard HealthcareITnews.com
• Walmart joins MediLedger, blockchain-based pharma tracking group Mike Miliard HealthcareITnews.com
• Apple Watch will be able to track menstrual cycles and warn about possible hearing loss from loud noise Angelica LaVito cnbc.com