The Centers for Medicare and Medicaid Services (CMS) will not enforce compliance with new HIPAA 5010 standards for electronic billing submissions until March 31, the agency announced on November 17. However, CMS encourages all physician practices to continue working with their vendors to become compliant with the new HIPAA standards and to determine their readiness to accept the new standards as of Jan. 1. The American Academy of Ophthalmology website provides HIPAA 5010 implementation guidelines.