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Official Description

Arthrotomy, ankle, including exploration, drainage, or removal of foreign body

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 27610 refers to an arthrotomy of the ankle, which is a surgical intervention involving an incision into the ankle joint. This procedure is performed to explore the joint, drain any accumulated fluid, or remove foreign bodies that may be present. The approach taken during the surgery is determined by the specific location of the fluid collection, foreign body, or other pathological conditions necessitating the exploration of the joint. During the procedure, the surgeon dissects the surrounding tissues to gain access to the joint capsule, which is then opened to allow for direct examination of the ankle joint. If an infection is detected, the surgeon will drain any fluid, which may include blood and pus, from the joint space. Additionally, cultures are collected for laboratory analysis to identify any infectious agents. The joint is thoroughly flushed with saline solution to clear out any debris, and any foreign objects found within the joint are carefully removed. After the necessary interventions are completed, the joint is flushed again with saline, and drains may be placed to facilitate fluid drainage post-operatively. Finally, the incision is closed in layers around the drain, and a dressing is applied to protect the surgical site.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure is indicated for various conditions affecting the ankle joint, particularly when there is a need for direct intervention. The following are specific indications for performing an arthrotomy of the ankle:

  • Fluid Collection Accumulation of fluid within the ankle joint, which may require drainage to alleviate pressure or discomfort.
  • Foreign Body Presence The presence of foreign objects within the joint that need to be surgically removed to prevent further complications.
  • Infection Signs of infection in the ankle joint, necessitating exploration and drainage of infected material, including pus and blood.
  • Joint Pathology Other pathological conditions that warrant direct exploration of the ankle joint for diagnosis or treatment.

2. Procedure

The arthrotomy procedure involves several critical steps to ensure effective exploration and treatment of the ankle joint. The following outlines the procedural steps involved:

  • Step 1: Incision and Dissection The surgeon begins by making an incision over the ankle joint, carefully dissecting the surrounding tissues to expose the joint capsule. This step is crucial for gaining access to the joint and is performed with precision to minimize damage to surrounding structures.
  • Step 2: Joint Capsule Opening Once the joint capsule is adequately exposed, the surgeon opens the capsule to access the ankle joint. This allows for direct visualization and examination of the joint interior, which is essential for identifying any abnormalities or foreign bodies.
  • Step 3: Fluid Drainage If an infection is present, the surgeon drains any fluid that has accumulated in the joint, which may include blood and purulent matter. This step is vital for relieving pressure and preventing further complications associated with infection.
  • Step 4: Culture Collection During the procedure, cultures are obtained from the joint fluid and sent for laboratory analysis. This is important for identifying the specific pathogens responsible for any infection and guiding appropriate treatment.
  • Step 5: Joint Flushing The ankle joint is then flushed with saline solution to remove any debris, blood, or infectious material. This step helps to clean the joint space and prepare it for further intervention.
  • Step 6: Foreign Body Removal Any foreign bodies identified within the joint are located and carefully removed. This is a critical step to ensure that no foreign materials remain that could lead to ongoing irritation or infection.
  • Step 7: Final Flushing After the removal of foreign bodies, the joint is flushed again with saline solution to ensure that all debris has been cleared from the joint space.
  • Step 8: Drain Placement If necessary, drains are placed to facilitate the removal of any residual fluid post-operatively. This helps to prevent fluid accumulation and supports healing.
  • Step 9: Closure The incision is then closed in layers around the drain, ensuring that the surgical site is properly sealed. This layered closure technique helps to promote optimal healing and reduce the risk of complications.
  • Step 10: Dressing Application Finally, a dressing is applied to the surgical site to protect it and support the healing process.

3. Post-Procedure

After the arthrotomy procedure, patients can expect specific post-operative care and considerations. The surgical site will require monitoring for signs of infection, such as increased redness, swelling, or discharge. Patients may be advised to keep the area clean and dry, and to follow specific instructions regarding activity levels to promote healing. Pain management will be addressed, and any prescribed medications should be taken as directed. If drains were placed, they will need to be monitored and managed according to the surgeon's instructions. Follow-up appointments will be necessary to assess healing and to remove any sutures or drains if applicable. Overall, the recovery process will vary based on the individual patient's condition and the extent of the procedure performed.

Short Descr EXPLORE/TREAT ANKLE JOINT
Medium Descr ARTHROTOMY ANKLE W/EXPL DRAINAGE/REMOVAL FB
Long Descr Arthrotomy, ankle, including exploration, drainage, or removal of 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) 1 - Statutory payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
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) P5B - Ambulatory procedures - musculoskeletal
MUE 1
CCS Clinical Classification 162 - Other OR therapeutic procedures on joints

This is a primary code that can be used with these additional add-on codes.

20700 Add-on Code MPFS Status: Active Code APC N ASC N1 Manual preparation and insertion of drug-delivery device(s), deep (eg, subfascial) (List separately in addition to code for primary procedure)
20704 Add-on Code MPFS Status: Active Code APC N Manual preparation and insertion of drug-delivery device(s), intra-articular (List separately in addition to code for primary procedure)
20705 Add-on Code MPFS Status: Active Code APC N Removal of drug-delivery device(s), intra-articular (List separately in addition to code for primary procedure)
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.
50 Bilateral procedure: unless otherwise identified in the listings, bilateral procedures that are performed at the same session, should be identified by adding modifier 50 to the appropriate 5 digit code. note: this modifier should not be appended to designated "add-on" codes (see appendix d).
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).
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
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.
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.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
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).
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CR Catastrophe/disaster related
GC This service has been performed in part by a resident under the direction of a teaching physician
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
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)
PO Excepted service provided at an off-campus, outpatient, provider-based department of a hospital
RT Right side (used to identify procedures performed on the right side of the body)
SG Ambulatory surgical center (asc) facility service
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
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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