Claims and Eligibility


Contracted and Non-Contracted Hospital Admission Process – Post-Stabilization

I. Prior Authorization Is Required for Inpatient Post-Stabilization Services

CalOptima Health requires both contracted and noncontracted hospitals to obtain prior authorization before admission for medically necessary inpatient post-stabilization services. Prior authorization is not required for emergency services. For OneCare (HMO D-SNP) members, observation status does not require a prior authorization. However, if the treating physician is planning to admit a OneCare member under observation to inpatient, a prior authorization is required before the inpatient admission.

II. Requesting Prior Authorization for Inpatient Post-Stabilization Services from CalOptima Health

For Medi-Cal or OneCare members enrolled in CalOptima Health, both contracted and noncontracted hospitals must request prior authorization before admission for medically necessary inpatient post-stabilization services. CalOptima Health requires the treating physician to provide a diagnosis and sufficient information reasonably necessary to make a decision to authorize medically necessary inpatient post-stabilization services. CalOptima Health has a licensed physician available seven days a week, 24 hours a day, to review and authorize Medically Necessary post-stabilization care services and to assist with coordinating the transfer of stabilized members in an emergency department to an appropriate network provider, if necessary.

The following two steps are required to request prior authorization:

1. Call the Utilization Management (UM) department to obtain a tracking number:

  • 714-246-8686 (Option 2 for inpatient)
  • Monday through Friday
  • 8 a.m. to 5 p.m., Pacific Standard Time (PST)
  • 714-403-1732
  • Monday through Friday from 5:01 p.m. to 7:59 a.m. PST
  • All-day Saturday, Sunday and holidays

2. Once you have obtained the tracking number, fax the clinical information necessary to support your request to a nurse case manager using the fax number that was provided to you along with the tracking number. Please include your contact information (name, phone number and fax number).

Contact Us
  • Providers and other health care professionals with questions regarding Medi-Cal, OneCare Connect, OneCare or PACE can call the Provider Resource Line at 714-246-8600 or email:

Electronic Data Interchange (EDI)
Provider Disputes
  • Dispute Process
    Review the payment dispute process for Medi-Cal and OneCare contracted providers

Prior Authorizations

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