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Official Description

Closure of median sternotomy separation with or without debridement (separate procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 21750 involves the surgical closure of a median sternotomy separation, which is a common approach used in various thoracic surgeries. A median sternotomy is an incision made along the midline of the chest, allowing access to the heart and other thoracic structures. Over time, the sternum may separate due to various factors, necessitating surgical intervention to restore its integrity. This procedure can be performed with or without debridement, which refers to the removal of dead or infected tissue to promote healing. The surgery is typically conducted under general anesthesia to ensure the patient is completely unconscious and pain-free during the operation. The surgeon makes an incision over the area of separation, carefully visualizing the sternum to assess the extent of the separation. If necessary, the surgeon may debride any affected bone or soft tissue to prepare the site for closure. Internal fixation devices, such as plates or screws, may be utilized to stabilize the sternum and ensure proper alignment during the healing process. Once the sternum is secured, the incision is meticulously closed to promote optimal recovery.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The closure of median sternotomy separation, as described by CPT® Code 21750, is indicated in specific clinical scenarios where the sternum has become separated. The following conditions may warrant this procedure:

  • Sternal Dehiscence - This condition occurs when the sternum, which was previously surgically opened, fails to heal properly, leading to separation.
  • Infection - In cases where there is an infection in the sternum or surrounding tissues, surgical intervention may be necessary to remove infected material and close the separation.
  • Trauma - Patients who have experienced trauma to the chest may require closure of the sternum if it has been fractured or displaced.
  • Post-Surgical Complications - Complications following cardiac or thoracic surgery may necessitate the closure of a median sternotomy separation.

2. Procedure

The procedure for the closure of median sternotomy separation involves several critical steps, which are outlined as follows:

  • Step 1: Anesthesia Administration - The procedure begins with the administration of general anesthesia to ensure the patient is unconscious and free from pain throughout the surgery.
  • Step 2: Incision Creation - The surgeon makes a precise incision over the previously separated sternum, carefully dissecting through the skin and subcutaneous tissue to expose the sternum.
  • Step 3: Visualization of the Sternum - Once the incision is made, the surgeon visualizes the sternum to assess the extent of the separation and determine the necessary interventions.
  • Step 4: Debridement (if necessary) - If there is any necrotic or infected tissue present, the surgeon may perform debridement to remove these tissues, ensuring a clean surgical site for closure.
  • Step 5: Internal Fixation - The surgeon utilizes internal fixation devices, such as plates or screws, to stabilize the sternum and hold any bone fragments in the correct position, facilitating proper alignment during healing.
  • Step 6: Closure of the Incision - After ensuring that the sternum is securely fixed, the surgeon closes the incision in layers, typically using sutures or staples, to promote optimal healing.

3. Post-Procedure

Following the closure of median sternotomy separation, patients can expect specific post-procedure care and considerations. Monitoring for signs of infection at the surgical site is crucial, as well as ensuring that the sternum remains stable during the recovery period. Patients may be advised to limit physical activity to prevent strain on the chest area. Pain management will be addressed, and follow-up appointments will be scheduled to assess healing and address any complications that may arise. The overall recovery time can vary based on the individual patient's health status and the extent of the procedure performed.

Short Descr REPAIR OF STERNUM SEPARATION
Medium Descr CLOSE MEDIAN STERNOTOMY SEP W/WO DEBRIDEMENT SPX
Long Descr Closure of median sternotomy separation with or without debridement (separate procedure)
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) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
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 Inpatient Procedures, not paid under OPPS
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P5B - Ambulatory procedures - musculoskeletal
MUE 1
CCS Clinical Classification 161 - Other OR therapeutic procedures on bone
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.
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
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).
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).
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) 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).
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.
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
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).
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
CR Catastrophe/disaster related
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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
Date
Action
Notes
2002-01-01 Changed Code description changed.
1992-01-01 Added First appearance in code book in 1992.
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