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26-851 Definitive Drug Testing Billing Change, Effective October 1, 2026
Act
by Sep 30, 2026
Effective date
Oct 1, 2026
Identified
Jul 28, 2026
Summary
Health Net will no longer reimburse CPT codes 80320-80377 for definitive drug testing effective October 1, 2026. Providers must transition to HCPCS G-series bundled laboratory codes (G0480-G0483) to avoid claim denials. All billing systems, charge masters, and workflows must be updated before the effective date.
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What to do
by Sep 30, 2026 · 8 steps
01Billing team must complete the following actions to prevent claim denials.
02Stop billing CPT codes 80320-80377 for definitive drug testing.
03Update billing software, charge masters, and encounter forms to require HCPCS G-series bundled laboratory codes (G0480-G0483) for all definitive drug testing claims.
04Create billing rules to block or reject any claims using CPT 80320-80377 on or after October 1, 2026.
05Educate all billing, coding, and clinical staff on the code transition and the consequences of using outdated codes.
06Providers must also be notified of this change.
07Claims submitted with CPT codes 80320-80377 on or after October 1, 2026, will be denied by Health Net.
08Contact Health Net Provider Services for questions: Behavioral Health 844-966-0298, Ambetter PPO 844-463-8188, Ambetter HMO 888-926-2164, or email Provider_Services.
Codes mentioned
80320803218032280323803248032580326803278032880329803308033180332803338033480335803368033780338803398034080341803428034380344803458034680347803488034980350803518035280353803548035580356803578035880359803608036180362803638036480365803668036780368803698037080371803728037380374803758037680377G0480G0481G0482G0483
Original notice
26-851 Definitive Drug Testing Billing Change, Effective October 1, 2026
providerlibrary.healthnetcalifornia.com · Always check the source before changing claims.
Related changes
See all Health Net changes →26-078 Coverage for HCPCS Codes G0482 and G0483 Ends on April 1, 2026MediumEffective Apr 1, 2026 · Prior Authorization26-079 Coverage for HCPCS Codes G0482 and G0483 Ends on April 1, 2026MediumEffective Apr 1, 2026 · Prior Authorization26-080 Coverage for HCPCS Codes G0482 and G0483 Ends on April 1, 2026MediumEffective Apr 1, 2026 · Prior Authorization26-580 New Claims Editing Requirements for Established Patient Billing and Bundled CodesHighEffective Jun 30, 2026 · ReimbursementBrowse every Health Net change in the policy list
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