2025 CPT code 11900
(Active) Effective Date: N/A Surgery - Surgical Procedures on the Integumentary System Feed
Intralesional injection of up to seven lesions.
Modifiers may be applicable to indicate specific circumstances, such as increased procedural services (modifier 22) or reduced services (modifier 52).
Medical necessity must be supported by documentation of the diagnosis requiring intralesional injection, such as keloids, acne cysts, or alopecia areata, and the expected therapeutic benefit of the injection.
The physician performs the injection, selecting the appropriate medication (often a corticosteroid) and needle size, and ensuring proper injection technique into the targeted lesion(s).
In simple words: Injection of medication directly into up to seven skin lesions to treat inflammation or other skin problems.
This code describes an intralesional injection of a corticosteroid, such as triamcinolone acetonide, for the treatment of various skin conditions like keloids, nodules, and hyperkeratotic lesions.The procedure involves inserting a fine-gauge needle (25-30 gauge) directly into the lesion and injecting the medication. The needle is withdrawn once the lesion expands and is filled with the injected fluid. This code is used for the injection of up to and including seven lesions.
Example 1: A patient presents with three keloids on the ear. The physician injects each keloid with triamcinolone acetonide using a 25-gauge needle., A patient has five cystic acne lesions on the face. The physician injects each lesion with a corticosteroid., A patient with alopecia areata has seven patches of hair loss on the scalp. The physician injects each patch with a corticosteroid to stimulate hair regrowth.
Documentation should include the number and type of lesions injected (e.g., keloid, nodule, cyst), the location of each lesion, the specific medication used, and the total amount injected. Any pre-injection anesthesia or pain management should also be documented.
- Specialties:Dermatology, Plastic Surgery, Family Medicine
- Place of Service:Office, Outpatient Hospital, Ambulatory Surgical Center