Imperial Health Plan Timely Filing Limit

The most important thing to confirm with Imperial Health Plan 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

• Imperial’s public transparency pages show a 90-day medical claim filing limit for AZ and TX Exchange enrollees. Provider manuals also state that participating providers must submit claims within the timeframes in their agreement, but the exact provider timely-filing window is not consistently surfaced across all manuals/pages and may vary by contract or product.

Initial claim filing limits

• AZ medical claims: 90 days
• TX medical claims: 90 days
• UT medical claims: 90 days (member transparency page)

Corrected claim filing limits

• Not clearly specified in the official sources reviewed
• Claim payment disputes for denials related to untimely filing must be submitted within 60 calendar days of the denial date shown on the EOP (Exchange manual).

Appeal and reconsideration deadlines

• Claim payment disputes: within 60 calendar days of the denial date set forth in the EOP (Exchange manual).
• Overpayment contest: within 30 working days of notice of overpayment (California provider manual).

Trigger basis and caveats

• The 90-day filing limit on the transparency page is presented as enrollee claim filing time limit by state for medical claims.
• The dispute deadline is triggered by the date of denial set forth in the EOP, not the original date of service.
• Provider-contract language may supersede or further specify filing limits.
• I did not find a single official provider manual passage that states one universal timely-filing limit for all Imperial products and states.
• The transparency page is member-facing; it is still official and useful for state filing limits, but it may not fully capture provider contract-specific rules.
• Corrected/voided claim deadlines were not clearly identified in the reviewed official sources.

Provider resources

• California provider page (official)
• Texas provider page (official)
• Provider manual (California / Imperial Health Plan of California, Inc.) (official)
• Exchange provider manual (2025) (official)
• Updated Exchange provider manual (2025) (official)
• Texas Marketplace prior authorization document (official)
• Transparency in Coverage / claim filing time limits (official)
• Provider portal (official)

Sources