You have instant access to the imaging authorization and supporting information you need on this site Whether submitting imaging exam requests or checking the status. Nia’s clinical guidelines are on radmd.com* under online tools/clinical guidelines Nia’s guidelines for medical specialty solutions services were developed from practice experience, literature reviews, specialty criteria sets and empirical data. These medical necessity criteria were developed by national imaging associates, inc (nia) for the purpose of making clinical review determinations for requests for therapies and diagnostic procedures.
Nia’s guidelines are reviewed yearly and modified when necessary following a literature search of pertinent and established clinical guidelines and accepted diagnostic imaging practices. How does the ordering provider obtain a prior authorization from nia for a medical specialty solutions outpatient service What information is required to receive prior authorization? Clinical guidelines preview 2026 advanced imaging guidelines 2025 advanced imaging guidelines checklists advanced imaging checklist low dose chest ct history form tip. The authorization number is valid for 60 days from the date of request
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