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2025 CPT code 21930

Excision of a subcutaneous soft tissue tumor from the back or flank, measuring less than 3 cm.

This code should not be used for radical resections or excisions of tumors involving deeper tissues, such as fascia, muscle, or bone. Use the appropriate code based on size, location, and depth for such procedures.

Modifiers may be applicable depending on the specific circumstances of the procedure. For example, modifier 54 may be used if only the surgical portion of the service is provided and post-operative care is transferred to another healthcare provider.

Medical necessity for CPT 21930 is established by the presence of a symptomatic or cosmetically disfiguring subcutaneous tumor of the back or flank that requires surgical removal. Documentation should support the medical necessity of the procedure.

The physician prepares the patient, administers anesthesia, makes an incision, excises the tumor and a margin of surrounding tissue, submits the specimen for analysis, irrigates the wound, and closes the incision.

In simple words: Removal of a small, non-cancerous lump, less than 3 cm, from under the skin of your back or side.

Excision, tumor, soft tissue of back or flank, subcutaneous; less than 3 cm. This code describes the surgical removal of a tumor located in the subcutaneous soft tissue of the back or flank. The tumor's greatest diameter, including the margin necessary for complete excision, is less than 3 cm. The procedure includes simple or intermediate repair of the surgical site.

Example 1: A patient presents with a 2 cm lipoma located in the subcutaneous tissue of the back. The physician excises the lipoma using CPT code 21930., A patient has a 1.5 cm cyst in the subcutaneous tissue of the flank. The cyst is excised using CPT code 21930., A patient has a 2.8 cm benign fibrous histiocytoma located just beneath the skin of the back. It is removed using CPT code 21930.

Documentation should include the size and location of the tumor, the operative report detailing the excision procedure, and the pathology report confirming the diagnosis.

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