Molina Healthcare (California)'s published appeal, dispute, and timely-filing windows are below, each quoted verbatim from Molina Healthcare (California)'s provider documentation or the governing regulation with a source link. Which window applies can depend on the product and its regulator, so confirm the product before you calendar the deadline.
Day types are not interchangeable: calendar, business, and month windows each count differently, and month windows are never converted to days. Every value below is quoted from its primary source.
Deadlines you must hit
Provider dispute filing
365 calendar daysClock starts: last date of action on issue
Providers may dispute by submitting and completing a Provider Dispute Resolution Request Form within three hundred sixty-five (365) days from the last date of action on the issue.
Source: Molina CA Medi-Cal Provider Dispute policy (also 2024 CA Marketplace Provider Manual, pp. 120-121)
Medicare provider dispute filing
365 calendar daysClock starts: original remittance advice date
Providers requesting a reconsideration of a claim previously adjudicated must request such action within 365 calendar days of Molina's original remittance advice date or longer as stated in the Provider Agreement.
Source: Molina CA Medicare Provider Manual (2023), pp. 105-106
Payer response clocks
Dispute resolution response
45 working daysClock starts: date of receipt of dispute
Molina will provide a written response to the provider within 45 working days from the date of the dispute and allows two levels of dispute.
Source: Molina CA Medi-Cal Provider Dispute policy (also 2024 CA Marketplace Provider Manual, p. 121)
Reference information for provider billing teams, not legal advice. Windows depend on the plan's regulator and product, so confirm against your contracted provider manual. Sources retrieved 2026-07-04.