Amerigroup. An Anthem Company.

Texas Providers

Prior authorization requirements

To request or check the status of a prior authorization request or decision for a particular plan member, access our Interactive Care Reviewer (ICR) tool via Availity. Once logged in, select Patient Registration | Authorizations & Referrals, then choose Authorizations or Auth/Referral Inquiry as appropriate.

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Physical Health/Behavioral Health Determination Timelines

Utilization review timeliness standards:

Program Authorization type Decision time frame
Medicaid Routine/non-urgent   Three business days
CHIP Routine/non-urgent   Two business days (approval)
Three business days (adverse determination)
Medicaid and CHIP Urgent/expedited Three calendar days
Medicaid and CHIP Concurrent One business day
Medicaid and CHIP Post-service 30 calendar days
  • A written notice of final determination will be provided no later than the next business day following a prior authorization request determination.
  • CHIP notifications:
    • For routine and urgent approvals, written/letter notification is required no later than the second business day after the date of the request.
    • For a member that is not hospitalized at the time of an adverse determination, notification will be provided within three business days in writing to the requesting provider and the member.
  • Within one hour of receiving the request for post-stabilization or life-threatening conditions, except for emergency medical conditions and emergency behavioral health conditions where a prior authorization is not required.
  • Providers can confirm that an authorization is on file by accessing the Availity Portal, , or by calling Provider Services at 800-454-3730. Staff are available Monday through Friday from 8 a.m. to 5 p.m. CT excluding state-observed holidays. You may leave a confidential voicemail after-hours and your call will be returned the next business day. If coverage of an admission has not been approved, the facility should contact Provider Services to resolve the issue.

Medicaid/CHIP Pharmacy Prior Authorization Submissions

Online pharmacy prior authorization:

Pharmacy prior authorization fax:


Available 24/7

Pharmacy phone (at Amerigroup):


Available 7 a.m. to 10 p.m. Central time

Medical injectable/infusible drugs prior authorization fax:


Available 24/7

Prescriber offices calling our pharmacy prior authorization call center will receive an authorization approval or denial immediately. For all other prior authorization requests, Amerigroup will notify the prescriber’s office of an approval or denial no later than 24 hours after receipt.

If Amerigroup cannot provide a response to the prior authorization request within 24 hours after receipt or the prescriber is not available to make a prior authorization request because it is after the prescriber’s office hours and the dispensing pharmacist determines it is an emergency, the pharmacy has the ability to dispense a 72-hour supply of the drug. Directions for submitting a 72-hour supply are included in messaging sent to the pharmacy. If additional assistance is needed, pharmacies may contact the CarelonRx* Help Desk at 833-252-0329.

Providers must be prepared to supply relevant clinical information regarding the member’s need for a nonpreferred product or a medication requiring prior authorization. Only the prescribing physician or one of their staff representatives can request prior authorization. Decisions are based on medical necessity and are determined according to the Texas Vendor Drug Program (VDP)-established medical criteria. Most approved requests for prior authorization will be valid for one year, although some medications may require review more often.

* CarelonRx, Inc. is an independent company providing pharmacy benefit management services on behalf of Amerigroup.

Member Assistance with Prior Authorizations

Members who have questions regarding prior authorizations may contact Member Services. Members can also live chat with a representative or send a secure message once a member logs into their account.


800-600-4441 (TTY 711)

Available Monday through Friday from 7 a.m. to 6 p.m. Central time

STAR Kids:

844-756-4600 (TTY 711)

Available Monday through Friday from 8 a.m. to 6 p.m. Central time

If you have any questions regarding pharmacy prior authorizations, contact Pharmacy Member Services, available 24/7:


833-235-2022 (TTY 711)

STAR Kids:

833-370-7463 (TTY 711)

Behavioral health

Submit requests through our Interactive Care Reviewer (ICR) tool via Availity .

You may also fax requests for services that require prior authorization to:





Services billed with the following revenue codes always require precertification:

0240–0249 all-inclusive ancillary psychiatric
0901, 0905–0907, 0913 and 0917 behavioral health treatment services
0944–0945 other therapeutic services
0961 psychiatric professional fees


Check the Texas Vendor Drug Program formulary and Preferred Drug List at .

Services billed with the following revenue codes always require prior authorization:

0632 Pharmacy multiple sources

Amerigroup uses Texas Vendor Drug Program (VDP) Prior Authorization criteria. The criteria is posted here .

A list of drugs to which each clinical policy applies is included in each individual policy.

VDP publishes a chart that shows which prior authorization policies each Managed Care Organization has opted into. The chart is posted here .

Long-Term Services and Supports

All long-term services and supports require prior authorization before services are rendered. Please use the fax numbers below to submit your requests.


Fax: 1-844-756-4604



Fax: 1-877-744-2334



Fax: 1-888-822-5761


STAR+PLUS Nursing Facility

Fax: 1-844-206-3445


El Paso

Fax: 1-888-822-5790


San Antonio

Fax: 1-877-820-9014



Fax: 1-888-820-6828



Fax: 1-888-562-5160

Provider tools & resources

Interested in becoming a provider in the Amerigroup network?

We look forward to working with you to provide quality services to our members.