Summary & Overview
CPT 27033: Open Hip Joint Exploration and Foreign Body Removal
CPT code 27033 represents an open surgical exploration of the hip joint with removal or drainage of foreign or loose bodies. This operative procedure is used when intra-articular debris, loose fragments, or fluid collections require direct visualization and extraction. Nationally, the code is relevant to orthopedic, trauma, and surgical practices that manage hip pathology not amenable to closed or arthroscopic techniques. Payers commonly covering this service include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will learn the clinical context for using this code, typical sites of service, and the practical billing considerations that affect reimbursement and claim adjudication. The publication provides benchmarks and coding guidance for documentation expectations, common modifiers, and typical payer coverage patterns. It also outlines where this procedure fits within surgical service lines and referral pathways. Data not available in the input is noted where applicable. The focus is national policy and billing practice context rather than state-specific rules or clinical recommendations.
Billing Code Overview
CPT code 27033 describes a surgical procedure in which the provider makes an incision to open the hip joint, inspects the joint space, and removes or drains any foreign or loose body present. This procedure is a form of operative joint exploration and foreign body removal.
-
Service type: Surgical procedure — open hip joint exploration and foreign/loose body removal
-
Typical site of service: Hospital operating room or ambulatory surgery center
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult who presents with acute or chronic hip pain, locking, catching, or decreased range of motion after trauma or degenerative disease. Imaging (plain radiographs and often MRI or CT) suggests a loose body, ossicle, or intra-articular fragment within the hip joint. The patient may have failed conservative care (rest, medication, physical therapy) or requires urgent intervention for mechanical symptoms or septic concerns. In the operating room under general or regional anesthesia, the orthopedic surgeon performs an open hip arthrotomy with incision into the joint, direct visualization and exploration of the articular surfaces, extraction of loose bodies or debris, and lavage and hemostasis prior to layered closure. Typical perioperative workflow includes preoperative evaluation, informed consent, intraoperative documentation of findings and removed specimens (if sent to pathology), and postoperative recovery with instructions for limited weight-bearing or activity as indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | When additional work or complexity beyond typical for 27033 is documented (extensive dissection, prolonged time, or additional procedures not captured by another code). |