New Unit Limitations for Allergy Testing & Allergy Immunotherapy CPT Codes

Effective Feb. 1, 2025, updated unit limitations will be applied to some allergy testing and immunotherapy CPT codes.

This bulletin article applies to NC Medicaid Direct.

Effective Feb. 1, 2025, the CPT codes in the table below will have new unit limitations. Clinical coverage policies 1N1 Allergy Testing and 1N2 Allergy Immunotherapy are in the process of being updated to reflect this guidance. A bulletin will be published announcing the final posting of these policies.

Existing coverage will not be revoked; rather, both policies will be updated to reflect current practice standards. Please consult the relevant clinical coverage policy upon its final posting for detailed information regarding this update.

CPT Code

Previous Unit Limitations

New Unit Limitations
Effective 2/1/2025

1N1 Allergy Testing
8600336 units per year30 units per 365 calendar days
86005n/a2 units per day up to 30 allergens per 365 calendar days
9500475 units per year80 units per 365 calendar days
9501730 units per date of service27 units per date of service
9502420 units per year30 units per 365 calendar days
9502720 units per year20 units per 365 calendar days
9502820 units per year20 units per 365 calendar days
9504436 units per year80 units per 365 calendar days
95052n/a36 units per date of service
95056n/a1 unit per date of service
95071removed due to obsoletionremoved due to obsoletion
1N2 – Allergy Immunotherapy
9518012 units per date of service6 units per date of service
951451 unit per date of service10 units per date of service
951461 unit per date of service10 units per date of service
951471 unit per date of service10 units per date of service
951481 unit per date of service10 units per date of service
951491 unit per date of service10 units per date of service
951701 unit per date of service10 units per date of service

The following 10 codes will remain unchanged:

  • 1N1 Allergy Testing -95018, 95027, 95028, 95070, 95076, 95079
  • 1N2 Allergy Immunotherapy - 95115, 95117, 95144, 95165

Contact

NCTracks Call Center: 800-688-6696

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