Deactivation
Removal of a provider from Medicare's enrollment file, typically for failing to revalidate, billing inactivity, or final adverse action.
1 min read · Last reviewed May 23, 2026
At a glance
- Category
- Enrollment
- Primary sources
- 2
- Workspace handoff
- compliance binder →
Where this comes up
Credentialing and revenue-cycle staff handle this — CAQH ProView upkeep, payer-roster validation, NPI maintenance, PECOS revalidation cycles, and the gap between application and effective date that strands new providers. Lapses here block payment until backdated re-enrollment closes the gap.
Full definition
What it is in practice
Per 42 CFR 424.540, CMS may deactivate billing privileges and require a new enrollment to reactivate. Deactivation creates an effective-date gap that often is not retroactive.
How it shows up in your practice
Keep enrollment current. Bills submitted during deactivation are denied — and reactivation does not always cover them.
Sources
- CMS — Provider Enrollment Revalidationhttps://www.cms.gov/medicare/enrollment-renewal/providers-suppliers/revalidation
- 42 CFR Part 424 — Medicare payment conditionshttps://www.ecfr.gov/current/title-42/chapter-IV/subchapter-B/part-424
Track enrollment status in the Compliance Binder
Open compliance binder →Related terms
- EnrollmentProvider Enrollment RevalidationCMS requirement to periodically re-submit and validate enrollment information to remain Medicare-enrolled.
- EnrollmentRevocationTermination of a provider's Medicare enrollment for grounds enumerated at 42 CFR 424.535, including non-compliance, felony convictions, false information, abuse of billing privileges.
- EnrollmentPECOS (Provider Enrollment System)The CMS online Provider Enrollment, Chain, and Ownership System used to submit and manage Medicare enrollment applications.
D3rx is a healthcare-billing and compliance research aid maintained by D3rx Inc. Articles are drafted by an LLM (Anthropic Claude) against primary HHS, OCR, CMS, eCFR, NIST, and state-regulator publications, and reviewed for restraint and source fidelity by the D3rx team.
Reviewer status: a named credentialed reviewer (CHC, CHPC, or healthcare attorney) is being engaged. Until that engagement is finalized, this page does not claim credentialed review.
Related across the archive
- GlossaryProvider Enrollment RevalidationCMS requirement to periodically re-submit and validate enrollment information to remain Medicare-enrolled.
- GlossaryRevocationTermination of a provider's Medicare enrollment for grounds enumerated at 42 CFR 424.535, including non-compliance, felony convictions, false information, abuse of billing privileges.
- GlossaryPECOS (Provider Enrollment System)The CMS online Provider Enrollment, Chain, and Ownership System used to submit and manage Medicare enrollment applications.
- GlossaryPreclusion ListCMS list of prescribers and providers whose claims and prescriptions are denied payment by Medicare Advantage and Part D.
- RegulationCMS-855A: Medicare Enrollment for Institutional ProvidersMedicare enrollment application for institutional providers including hospitals, CAHs, hospices, home health agencies, federally qualified health centers, rural health clinics, and similar entities.
- RegulationCMS-855B: Medicare Enrollment Application for Clinics and Group PracticesThe Medicare enrollment application for clinics, group practices, and certain other suppliers — the primary enrollment vehicle for medical practices that bill Part B.
- RegulationCMS-855I: Medicare Enrollment Application for Individual Physicians and Non-Physician PractitionersIndividual Medicare enrollment vehicle for physicians, NPPs, and certain other individual suppliers; required for any clinician billing Medicare under their own name.
- RegulationCMS-855O: Medicare Enrollment for Eligible Ordering and Certifying Physicians and Other Eligible ProfessionalsAbbreviated Medicare enrollment for clinicians who order or certify items and services for Medicare beneficiaries but do not personally bill Medicare.
This glossary entry is a research aid for billing and compliance staff. It does not provide legal, medical, or financial advice and does not replace counsel. References cited link to primary sources at HHS, OCR, CMS, eCFR, NIST, and the relevant payer or industry body.