CommercialCoverageMedium impact
07.02.21r, Ambulatory Electrocardiography (AECG) Monitoring and Mobile Cardiac Outpatient Telemetry (MCOT) Monitoring
Independence Blue Cross·PA · Cardiology, Internal Medicine·Medical Policy
Effective date
Jul 21, 2025
We identified it
Jun 19, 2026
Summary
Independence Blue Cross updated policy 07.02.21s to establish a maximum coverage limit of 15 days for continuous AECG/MCOT monitoring. Continuous external monitoring beyond 15 days is now classified as experimental/investigational and not covered. Additionally, ICD-10 code Z09 was removed from medically necessary diagnoses, affecting documentation requirements for follow-up encounters.
Action Required
By July 21, 2025: (1) Billing team must update claim submission rules to deny continuous AECG/MCOT monitoring claims that exceed 15 days for CPT 93224 and related monitoring codes (0650T, 33285, 33286, C1764, C1833, E0616). (2) Remove ICD-10 code Z09 from medically necessary diagnosis code list in billing system and encounter forms. (3) Providers must document medical necessity using only the covered clinical criteria and verify monitoring duration does not exceed 15 days before submitting claims. (4) Update denial messaging to cite experimental/investigational status for claims exceeding 15-day limit. Failure to enforce the 15-day limit will result in claim denials upon audit.