Summary & Overview
CPT 95125: Allergen Immunotherapy Session, Two or More Injections
CPT code 95125 denotes a single encounter in an allergen immunotherapy program in which the clinician administers two or more injections of allergenic extract during the same visit. This code is used nationally to document multi-injection allergy shot sessions that are part of a gradual buildup toward clinical tolerance and ongoing maintenance therapy. Accurate coding of these encounters is important for consistent clinical documentation, patient safety monitoring, and payer adjudication across commercial and public plans.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise national overview of how 95125 is applied clinically, common service settings, and the types of benchmarks and policy issues typically relevant to immunotherapy billing. The publication outlines expected uses of the code, common modifiers used in practice (listed separately), and the clinical context that drives utilization of multi-injection sessions.
This document is intended to inform clinical coders, practice managers, and policy analysts about the role of 95125 in allergen immunotherapy workflows, typical sites where services occur, and the topics to review when assessing coverage, claims processing, or program design. Data not available in the input will be stated where applicable.
Billing Code Overview
CPT code 95125 describes a session in a graduated allergen immunotherapy (allergy shot) series in which the provider administers two or more injections of a specific allergenic extract with the intent of achieving clinical tolerance over time. The code represents a single patient encounter during the buildup or maintenance phase when multiple injections are given in one visit.
Service type: Allergen immunotherapy injections (multiple injections per session)
Typical site of service: Office or clinic setting where allergy injections are administered, such as an allergist or primary care outpatient facility. Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 34-year-old patient with seasonal allergic rhinitis and confirmed sensitivity to grass and tree pollens presents to an allergy clinic for initiation and escalation of subcutaneous allergen immunotherapy (SCIT). The provider administers multiple small-volume allergen extracts during a single visit as part of a build-up phase to gradually increase tolerance. The clinic visit includes pre-injection assessment (vital signs, review of medications including beta-blockers), preparation of individually dosed allergenic extracts by nursing staff or pharmacy, and administration of two or more injections per session using standard aseptic technique into the subcutaneous tissue of the upper arm. The patient remains in the clinic for observation for at least 20–30 minutes for potential immediate hypersensitivity reactions. Typical documentation includes indication for immunotherapy, materials and extract concentrations used, number of injections given, injection sites, lot numbers, patient tolerance during the session, and post-injection instructions.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier - standard reporting | Use when no special modifier applies and service is reported normally |
22 |