EOCCO referrals & authorizations
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Referrals & authorizations

Learn which services need prior authorizations, which services are not covered, and which are not medically necessary.

EOCCO Medical Necessity Criteria


The following tools are EOCCO’s referral and authorization guidelines and instructions. They can help you understand prior authorization request requirements and other medical services that do not require authorization.

Clinical Practice Guidelines



Behavioral Health


Customer Service: 888-788-9821 (TTY users: 711)
Pharmacy Customer Service 888-474-8539
Hours: Monday through Friday, 7:30 a.m. to 5:30 p.m. PST

EOCCO members should have their member ID number ready for quicker help.

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