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Official Description

Partial excision (craterization, saucerization, or diaphysectomy) bone, femur, proximal tibia and/or fibula (eg, osteomyelitis or bone abscess)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 27360 involves a partial excision of bone, specifically targeting the femur, proximal tibia, and/or fibula. This surgical intervention is commonly referred to as craterization, saucerization, or diaphysectomy, and is primarily performed to address conditions such as osteomyelitis or bone abscess. Osteomyelitis is an infection of the bone that can lead to the destruction of bone tissue, while a bone abscess is a localized collection of pus within the bone. The goal of this procedure is to remove infected and necrotic bone tissue, thereby facilitating drainage from the infected area and promoting healing. Craterization and saucerization techniques involve creating a shallow depression in the bone surface, which aids in the drainage of infection. In contrast, diaphysectomy specifically refers to the removal of the infected segment of the shaft of a long bone. The surgical approach begins with an incision through the skin and soft tissue over the affected area, allowing access to the necrotic and infected bone. The procedure is meticulous, requiring the resection of any associated soft tissue sinus tracts and devitalized soft tissue to ensure complete removal of the infection. The surgeon employs various tools, including drill bits and osteotomes, to excavate the infected bone, with the extent of bone removal determined by the severity of the infection. Ultimately, the procedure aims to restore the integrity of the bone and eliminate the source of infection, thereby improving the patient's condition.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 27360 is indicated for the treatment of specific conditions affecting the bone, particularly in cases where infection or necrosis is present. The following are the primary indications for performing this procedure:

  • Osteomyelitis - A serious bone infection that can lead to the destruction of bone tissue, necessitating surgical intervention to remove infected areas.
  • Bone Abscess - A localized collection of pus within the bone, which may require drainage and removal of infected bone to promote healing.

2. Procedure

The procedure for CPT® Code 27360 involves several critical steps to ensure effective treatment of the infected bone. Each step is designed to meticulously address the infection while preserving as much healthy bone as possible.

  • Step 1: Incision and Exposure - The procedure begins with the surgeon making an incision in the skin over the site of the osteomyelitis. This incision is carefully extended through the soft tissue layers to expose the underlying bone that is affected by infection.
  • Step 2: Resection of Soft Tissue - Once the bone is exposed, any soft tissue sinus tracts and devitalized soft tissue are resected. This step is crucial to ensure that all infected and non-viable tissue is removed, which helps to prevent further infection.
  • Step 3: Exposure of Necrotic Bone - After the soft tissue has been addressed, the area of necrotic and infected bone is fully exposed. This allows the surgeon to assess the extent of the infection and plan the subsequent steps of the procedure.
  • Step 4: Drilling and Excavation - A series of drill holes are made in the infected bone. The bone between these drill holes is then excavated using an osteotome to create an oval window. The extent of bone removal is determined by the severity of the infection, ensuring that all affected areas are adequately addressed.
  • Step 5: Curettage - A curette may be utilized to remove any remaining devitalized tissue from the medullary canal, further ensuring that all infected material is eliminated from the surgical site.
  • Step 6: Irrigation - Once all devitalized and infected tissue has been removed, the wound is copiously irrigated with sterile saline or an antibiotic solution. This step is essential for cleansing the area and reducing the risk of postoperative infection.
  • Step 7: Closure and Drain Placement - Finally, the surgical wound is loosely closed, and a drain is placed to facilitate any potential drainage from the site, allowing for proper healing and monitoring of the area.

3. Post-Procedure

After the completion of the procedure, patients can expect specific post-operative care and considerations. The surgical site will require monitoring for signs of infection or complications. The drain placed during the procedure will help manage any fluid accumulation, and it is important to follow the surgeon's instructions regarding its care and removal. Patients may also be advised on pain management strategies and the importance of keeping the surgical area clean and dry. Follow-up appointments will be necessary to assess healing and ensure that the infection has been adequately addressed. Rehabilitation or physical therapy may be recommended to restore function and strength in the affected limb as recovery progresses.

Short Descr PARTIAL REMOVAL LEG BONE(S)
Medium Descr PRTL EXC BONE FEMUR PROX TIBIA&/FIBULA
Long Descr Partial excision (craterization, saucerization, or diaphysectomy) bone, femur, proximal tibia and/or fibula (eg, osteomyelitis or bone abscess)
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) P5B - Ambulatory procedures - musculoskeletal
MUE 2
CCS Clinical Classification 142 - Partial excision bone

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)
20702 Add-on Code MPFS Status: Active Code APC N Manual preparation and insertion of drug-delivery device(s), intramedullary (List separately in addition to code for primary procedure)
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
RT Right side (used to identify procedures performed on the right side of the body)
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.
LT Left side (used to identify procedures performed on the left side of the body)
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).
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).
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.
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).
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
ET Emergency services
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
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
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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Notes
2013-01-01 Changed Medium Descriptor changed.
2011-01-01 Changed Short description changed.
Pre-1990 Added Code added.
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