Dec. 24, 2025
We’re changing prior authorization requirements that may apply to some commercial members and members with Healthy Montana Kids and Medicare Advantage plans.
Changes are based on updates from utilization management prior authorization assessment, Current Procedural Terminology (CPT®) code changes released by the American Medical Association or Healthcare Common Procedure Coding System code changes from the Centers for Medicare & Medicaid Services.
For some services and members, prior authorization may be required through Blue Cross and Blue Shield of Montana. Utilization management and related services for commercial members and members with HMK will be reviewed by Carelon. Utilization management for Medicare Advantage members will be done by BCBSMT.
These changes for commercial members begin April 1, 2026:
- Addition of a non-emergency air ambulance code to be reviewed by BCBSMT
- Addition of advanced imaging codes to be reviewed by Carelon
- Removal of advanced imaging codes previously reviewed by Carelon
- Removal of radiation oncology codes previously reviewed by Carelon
- Addition of musculoskeletal codes to be reviewed by Carelon
- Addition of genetic lab codes to be reviewed by Carelon
- Removal of genetic lab codes previously reviewed by Carelon
- Replacement of medical oncology codes reviewed by Carelon
- Removal of medical oncology codes previously reviewed by Carelon
- Addition of medical oncology codes to be reviewed by Carelon
- Removal of miscellaneous codes previously reviewed by BCBSMT
- Addition of drug codes to be reviewed by BCBSMT
These changes for members of Medicare Advantage began Jan. 1, 2026:
- Change of specialty drug codes to be reviewed by BCBSMT
- Change of lab codes to be reviewed by BCBSMT
- Change of musculoskeletal codes to be reviewed by BCBSMT
- Removal of lab codes previously reviewed by EviCore
- Removal of radiology codes previously reviewed by EviCore
- Change of medical oncology codes to be reviewed by BCBSMT
- Change of genetic testing codes to be reviewed by BCBSMT
- Change of specialty drug codes to be reviewed BCBSMT
- Change of radiation therapy codes to be reviewed by BCBSMT
- Removal of musculoskeletal codes previously reviewed by EviCore
- Removal of sleep codes previously reviewed by EviCore
- Removal of specialty drug codes previously reviewed by EviCore
- Removal of advanced imaging codes previously reviewed by EviCore
- Removal of radiology codes previously reviewed by EviCore
These changes for members of Medicare Advantage begin April 1, 2026
- Change of musculoskeletal codes to be reviewed by BCBSMT
- Change of medical oncology codes to be reviewed by BCBMT
- Addition of specialty drug codes to be reviewed by BCBSMT
- Addition of lab codes to be reviewed by BCBSMT (HMK)
- Addition of radiation therapy codes to be reviewed by BCBSMT (HMK)
- Removal of lab codes previously reviewed by EviCore (HMK)
- Removal of radiology codes previously reviewed by EviCore (HMK)
- Addition of durable medical equipment codes to be reviewed by BCBSMT
For a revised list of codes, refer to prior authorization and recommended clinical review.
Always check eligibility and benefits first through Availity® Essentials or your preferred vendor prior to rendering services. This step will confirm prior authorization requirements and utilization management vendors, if applicable.
Checking eligibility and/or benefit information and/or obtaining prior authorization is not a guarantee of payment. Benefits will be determined once a claim is received and will be based upon, among other things, the member’s eligibility and the terms of the member’s coverage contract or guide. If you have any questions, call the number on the member's ID card.
Services performed without required prior authorization or that do not meet medical necessity criteria may be denied for payment and the rendering provider may not seek reimbursement from the member.
CPT copyright 2024 AMA. All rights reserved. CPT is a registered trademark of the AMA.
Availity is a trademark of Availity, LLC, a separate company that operates a health information network to provide electronic information exchange services to medical professionals. Availity provides administrative services to BCBSMT. EviCore healthcare is an independent specialty medical benefits management company that provides utilization management services for BCBSMT. Carelon Medical Benefits Management is an independent company that has contracted with BCBSMT to provide utilization management services for members with coverage through BCBSMT.
BCBSMT makes no endorsement, representations or warranties regarding third party vendors and the products and services they offer.