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2025 CPT code 26070

Arthrotomy, with exploration, drainage, or removal of loose or foreign body; carpometacarpal joint

If a cast is applied during the procedure, it is included in the code and should not be billed separately. Subsequent replacement of a cast is billable separately.

Modifiers may be applicable to indicate specific circumstances of the procedure, such as increased procedural services (22), bilateral procedures (50), or distinct procedural service (59).

Medical necessity should be established based on the patient's symptoms, physical exam findings, and imaging studies. The procedure is considered medically necessary when conservative treatments fail to alleviate symptoms or when a foreign body or loose body is identified that requires surgical removal.

In simple words: The surgeon makes an incision to open the carpometacarpal joint in your wrist. They will explore the joint and remove any foreign objects (like splinters of bone or cartilage) or loose bodies. The joint is then cleaned, and the incision is closed.

This procedure involves opening the carpometacarpal joint in the wrist, exploring the joint, and draining or removing any loose or foreign bodies present.

Example 1: A patient presents with persistent wrist pain and limited range of motion after a fall. Imaging reveals a loose body in the carpometacarpal joint. The surgeon performs an arthrotomy to remove the loose body and restore joint function., A patient experiences wrist pain and swelling after a penetrating injury. Imaging suggests a foreign body lodged in the carpometacarpal joint. The surgeon performs an arthrotomy to remove the foreign body and debride the joint., A patient with rheumatoid arthritis develops chronic inflammation and fluid buildup in the carpometacarpal joint. The surgeon performs an arthrotomy to drain the fluid and alleviate symptoms.

Document the medical necessity for the procedure, including patient symptoms, physical exam findings, and imaging results. Operative report should detail the procedure, including the size and location of any loose or foreign bodies removed, and any complications encountered.

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