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Medicare (CMS / PECOS) Provider Enrollment Guide
CMS Part B, PECOS Electronic Filing & MAC Jurisdiction Guidelines · Verified August 2026
CMS Guideline30–60 DaysNational Average: 45 Days
Submission MethodPECOS ElectronicCMS-855I & CMS-855R
Retroactive WindowUp to 30 DaysClaims backdated 30d pre-filing
Revalidation5-Year CycleMonitored via CMS lists
Zero Long-Term Contract · Full BAA Provided
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