81166 prior authorization | Blue Cross and Blue Shield of Montana

81166, Brca1 (Brca1 Dna Repair Associated) (Eg Hereditary Breast And Ovarian Cancer) Gene Analysis; Full Duplication/Deletion Analysis (Ie Detection Of Large Gene Rearrangements), is on the Blue Cross and Blue Shield of Montana commercial prior authorization list. Not a coverage or referral decision.

Code: 81166
Description: Brca1 (Brca1 Dna Repair Associated) (Eg Hereditary Breast And Ovarian Cancer) Gene Analysis; Full Duplication/Deletion Analysis (Ie Detection Of Large Gene Rearrangements)
Source: 2026 Commercial Medical Surgical Prior Authorization Code List, Pg 101 Original policy

Blue Cross and Blue Shield of Montana prior authorization

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