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Official Description

Arthrotomy, hip, including exploration or removal of loose or foreign body

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 27033 refers to an arthrotomy of the hip, which is a surgical intervention involving an incision into the hip joint. This procedure is primarily indicated for the exploration or removal of loose or foreign bodies that may be present within the joint space. Loose bodies typically arise from trauma to the hip joint, leading to the detachment of cartilage fragments that can float freely within the joint. These loose fragments can interfere with normal joint movement, resulting in pain, discomfort, and a decrease in mobility for the patient. The surgical approach begins with a skin incision made over the lateral aspect of the hip joint, allowing access to the underlying structures. The surgeon then carefully dissects through the soft tissues and opens the joint capsule to gain visibility of the hip joint interior. Once inside, the surgeon examines the joint for any signs of injury or disease and identifies the loose or foreign bodies that need to be removed. After the removal of these bodies, the joint is typically flushed with sterile saline to ensure cleanliness and reduce the risk of infection before the incision is closed. This procedure is crucial for restoring function and alleviating pain associated with loose bodies in the hip joint.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 27033 is indicated for the following conditions:

  • Loose Bodies in the Hip Joint The presence of loose bodies, which are fragments of cartilage or other materials that have detached from the joint surface, causing pain and mobility issues.
  • Trauma to the Hip Joint Injuries that result in the detachment of cartilage or other structures within the hip joint, leading to the formation of loose bodies.
  • Joint Pain and Reduced Mobility Symptoms that arise from the interference of loose bodies with normal hip movement, necessitating surgical intervention for relief.

2. Procedure

The procedure for CPT® Code 27033 involves several critical steps to ensure effective removal of loose or foreign bodies from the hip joint:

  • Step 1: Skin Incision The procedure begins with the surgeon making a skin incision over the lateral aspect of the hip joint. This incision is strategically placed to provide optimal access to the joint while minimizing damage to surrounding tissues.
  • Step 2: Dissection of Soft Tissues Following the incision, the surgeon carefully dissects through the soft tissues, which may include skin, subcutaneous fat, and muscle layers, to reach the joint capsule. This step requires precision to avoid unnecessary trauma to the surrounding structures.
  • Step 3: Opening the Joint Capsule Once the soft tissues are adequately dissected, the joint capsule is opened. This allows the surgeon to gain direct access to the hip joint, where the internal examination will take place.
  • Step 4: Examination of the Hip Joint The surgeon thoroughly examines the interior of the hip joint for any signs of injury, disease, or the presence of loose or foreign bodies. This examination is crucial for identifying all problematic materials that need to be addressed.
  • Step 5: Removal of Loose or Foreign Bodies After identifying the loose or foreign bodies, the surgeon carefully removes them from the joint space. This step is essential for alleviating the symptoms associated with their presence and restoring normal joint function.
  • Step 6: Flushing the Joint Upon completion of the removal, the joint is flushed with sterile saline. This step helps to cleanse the joint space, reducing the risk of infection and ensuring that any remaining debris is cleared away.
  • Step 7: Closing the Incision Finally, the incision made at the beginning of the procedure is closed. This may involve suturing the skin and other layers to promote proper healing and recovery.

3. Post-Procedure

After the completion of the arthrotomy procedure, patients can expect specific post-operative care and recovery considerations. It is essential to monitor the surgical site for any signs of infection or complications. Patients may be advised to rest and limit weight-bearing activities on the affected hip for a designated period to facilitate healing. Pain management strategies, including prescribed medications, may be implemented to ensure patient comfort during the recovery phase. Physical therapy may also be recommended to restore mobility and strength in the hip joint as healing progresses. Follow-up appointments will be necessary to assess the surgical site and the overall recovery process, ensuring that the patient regains optimal function of the hip joint.

Short Descr EXPLORATION OF HIP JOINT
Medium Descr ARTHROTOMY HIP EXPLORATION/REMOVAL FOREIGN BODY
Long Descr Arthrotomy, hip, including exploration or removal of loose or foreign body
Status Code Active Code
Global Days 090 - Major Surgery
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 1 - 150% payment adjustment for bilateral procedures applies.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Surgical procedure on ASC list in CY 2007; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P3D - Major procedure, orthopedic - other
MUE 1
CCS Clinical Classification 162 - Other OR therapeutic procedures on joints
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
RT Right side (used to identify procedures performed on the right side of the body)
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
78 Unplanned return to the operating/procedure room by the same physician or other qualified health care professional following initial procedure for a related procedure during the postoperative period: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
82 Assistant surgeon (when qualified resident surgeon not available): the unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s).
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
GC This service has been performed in part by a resident under the direction of a teaching physician
GW Service not related to the hospice patient's terminal condition
LT Left side (used to identify procedures performed on the left side of the body)
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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