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MMIS and POSC Information for MassHealth Providers

The Medicaid Management Information System and Provider Online Service Center offer important web-based tools to MassHealth providers.

The Medicaid Management Information System (MMIS) and the MassHealth Provider Online Service Center (POSC) offer a web-based environment that automates functions such as member eligibility verification, claim submission and status, claims processing, prior authorization, referrals, preadmission screening, online remittance advices, and reports.

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