Summary & Overview
CPT 11951: Collagen Injection, 1.1 cc to 5.0 cc Subcutaneous
CPT code 11951 designates the injection of 1.1 cc to 5.0 cc of collagen into the subcutaneous layer of skin, representing a defined volume range for soft-tissue augmentation. This code matters nationally for consistent reporting of collagen-based augmentation procedures used in dermatology, plastic surgery, and reconstructive contexts. Accurate use of this code supports clinical documentation, appropriate reimbursement, and monitoring of utilization for cosmetic and reconstructive care.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides a national view of code definition, clinical context, common sites of service, and payer coverage considerations. Readers will find benchmarks for typical utilization ranges (where available), guidance on coding specificity tied to injected volume, and a summary of payer coverage themes. The report also outlines common modifier practice patterns and administrative considerations when billing collagen injections in outpatient and office-based procedural settings.
This summary is intended to give clinicians, billing professionals, and policy analysts a concise reference for CPT code 11951, clarifying what the code represents and what to expect in payer interactions and documentation requirements. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 11951 describes the injection of 1.1 cc to 5.0 cc of collagen into the subcutaneous layer of skin. This procedure is a soft tissue augmentation technique used to add volume and support to subcutaneous tissues.
Service type: Collagen injection for subcutaneous augmentation
Typical site of service: Outpatient procedure setting, commonly performed in dermatology, plastic surgery, or office-based procedural suites where minor cosmetic or reconstructive soft-tissue injections are provided.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult presenting to an outpatient dermatology or cosmetic surgery clinic seeking correction of moderate-to-severe facial soft-tissue deficits such as nasolabial folds, marionette lines, or contour irregularities following trauma or congenital deficiency. The provider confirms indications, reviews medical history including allergy to bovine-derived products, obtains informed consent, and documents baseline photographs. The procedure is performed in a procedure room or minor treatment suite (office-based clinical setting) with the patient reclined. Topical or local anesthesia is applied as indicated. The provider prepares the injection site using aseptic technique and injects a collagen implant into the subcutaneous layer, delivering between 1.1 cc and 5.0 cc per the coded parameter. Post-injection hemostasis is achieved, brief observation for immediate reaction occurs, and post-procedure instructions are provided. Follow-up is arranged to assess implant integration, effectiveness, and any complications such as infection, allergic reaction, or implant migration.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier required / not otherwise specified | Rarely used; default when no other modifier applies |
11 |