CareSource Timely Filing Limit

The most important thing to confirm with CareSource is not just the number of days, but also what event starts the clock. Some payer documents measure from date of service, some from discharge, and some publish different rules for corrected claims or appeals.

At a glance

• For CareSource Nevada Medicaid, the provider manual states in-network claims must be submitted within 180 days from date of service or eligibility decision, whichever is later; out-of-state providers have 365 days. Corrected claims are generally treated as initial claims and remain subject to the original timely-filing limit unless the claim is in a special scenario (for example, certain post-discharge billing or COB handling).

Initial claim filing limits

• In-network providers: 180 days from date of service or eligibility decision, whichever is later
• Out-of-state providers: 365 days from date of service or eligibility decision, whichever is later
• Certain facility/final-bill scenarios: provider has six months from date of discharge to submit the complete bill

Corrected claim filing limits

• Corrected claims filed after an initial timely claim are still considered initial claims and are subject to the 180-day limit for in-network providers
• Corrected claims must include the original claim number
• If a claim was denied for incorrect/inaccurate information, it may be resubmitted with corrections; if resubmitted without corrections, it is treated as a duplicate

Appeal and reconsideration deadlines

• Provider disputes: within 12 months from date of service or 60 calendar days after payment/denial/partial denial of a timely dispute submission, whichever is later
• Non-participating provider claim appeal: within 60 days of remittance advice
• Non-participating provider claim appeal: if no contract-specific rule applies, 65 calendar days from date of service or discharge is stated on the Nevada appeals page
• Corrected claim vs appeal distinction is emphasized; corrected claims should be used when the issue is incomplete/incorrect/unclear claim information

Trigger basis and caveats

• The manual uses date of service or date of eligibility decision, whichever is later, for initial filing timeliness
• Some appeal/dispute deadlines are measured from remittance advice, written determination, payment, or denial date rather than date of service
• Coordination-of-benefits scenarios have special documentation timing rules
• Timely filing varies by provider type and scenario; the manual contains several exceptions.
• The source manual is Nevada Medicaid-specific and should be preferred over general CareSource pages for filing rules.
• For corrected claims, the plan distinguishes between corrected resubmissions and appeals/disputes.

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