Billing and Coding: Allergen Immunotherapy (AIT) with Subcutaneous Immunotherapy (SCIT)

CPT 95165 is payable for physician preparation and provision of non‑venom allergen extracts for SCIT/AIT when prepared by an MD/DO who has examined the patient and established a treatment and dosage regimen; injections are billed separately. Billing is limited by the vial‑based dose accounting used for practice expense (commonly up to 10 doses per 10 cc vial, proportional for other vial sizes), maintenance claims require modifier EJ, and documentation must include patient identifiers, preparer details, extract composition, number of doses, and expiration/lot information; reasonable supply is generally limited to a 12‑month supply.

"CPT 95165 covers the physician professional service for preparation and provision of non‑venom antigen extracts for allergen immunotherapy (SCIT/AIT), including calculations of concentration and vo..."

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