CareSource Prior Authorization

CareSource prior authorization rules are often service-specific rather than universal, so the safest workflow is to confirm the requirement in the payer's provider resources before scheduling or submitting care. The notes below summarize the most actionable provider-side guidance captured in the research set for this payer.

At a glance

• CareSource Nevada Medicaid requires prior authorization for services on its list; the provider portal is the preferred submission method. Emergency care does not need prior authorization, but emergency-room admissions do. Standard decisions are due within 7 calendar days, urgent decisions within 2 business days or 72 hours, and some request types may have specific extension rules.
• Authorizations are not a guarantee of payment.
• All services requiring prior authorization should be authorized before service delivery.
• CareSource states it cannot pay claims when prior authorization was required but not obtained.
• The Nevada page lists a '2026 Prior Authorization List' while the manual contains plan-wide Medicaid guidance; service-specific requirements should be checked by code.

Where to verify prior authorization requirements

• Verification resource 1
• Verification resource 2
• Verification resource 3

How to submit prior authorization requests

• Provider Portal (preferred)

• Phone

• Fax

• Mail

• Submission resource 1

• Submission resource 2

Information commonly required

• Clinical information supporting medical necessity
• Requested service/procedure details
• Member eligibility should be verified on the date of service
• If appealing a medical-necessity denial, member consent is required

Turnaround notes and caveats

• Standard preservice decisions: no later than 7 calendar days after receipt of the request
• Urgent preservice decisions: within 2 business days or 72 hours, whichever is sooner
• Concurrent review: 3 calendar days
• Retro/post-service requests: 30 calendar days
• Urgent incomplete requests: provider has 48 hours to respond to an additional-information request; the plan may extend urgent determinations once by up to 14 calendar days
• Authorizations are not a guarantee of payment.
• All services requiring prior authorization should be authorized before service delivery.
• CareSource states it cannot pay claims when prior authorization was required but not obtained.
• The Nevada page lists a '2026 Prior Authorization List' while the manual contains plan-wide Medicaid guidance; service-specific requirements should be checked by code.

Provider resources

• Nevada Medicaid Provider Manual (PDF) (official)
• Nevada Medicaid Provider Claims page (official)
• Nevada Medicaid Prior Authorization page (official)
• Nevada Medicaid Provider Contact Us (official)
• Nevada Medicaid Provider Disputes or Appeals (official)

Sources