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Official Description

Partial excision (craterization, saucerization, or diaphysectomy) of bone (eg, for osteomyelitis); ulna

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 25150 involves a partial excision of bone, specifically targeting the ulna, to address osteomyelitis, which is an infection of the bone. This surgical intervention can also be referred to as craterization, saucerization, or diaphysectomy, each term describing a specific technique used to remove infected and necrotic bone tissue. Craterization and saucerization are techniques that create a shallow depression in the bone surface, facilitating drainage from the infected area, while diaphysectomy refers to the removal of the infected segment of the shaft of a long bone. The procedure begins with an incision through the skin and soft tissue over the site of infection, allowing access to the affected area. The surgeon meticulously resects any soft tissue sinus tracts and devitalized tissue to expose the necrotic and infected bone. A series of drill holes are then created in the affected bone, and the bone between these holes is excavated using an osteotome to form an oval window. The extent of bone removal is determined by the severity of the infection. Additionally, a curette may be employed to clear out any devitalized tissue from the medullary canal. The debridement process continues until healthy bone is reached, indicated by the presence of punctate bleeding on the exposed surface. Following the removal of all infected and necrotic tissue, the surgical site is thoroughly irrigated with sterile saline or an antibiotic solution to reduce the risk of further infection. Finally, the wound is loosely closed, and a drain is placed to facilitate any necessary fluid drainage post-operatively.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 25150 is indicated for the treatment of osteomyelitis affecting the ulna. Osteomyelitis is characterized by the infection of bone tissue, which can lead to necrosis and the formation of abscesses. The following conditions may warrant this surgical intervention:

  • Osteomyelitis A bone infection that can result in the destruction of bone tissue, necessitating surgical removal of the infected area.
  • Necrotic Bone Tissue The presence of dead or dying bone tissue that requires excision to prevent further complications and promote healing.
  • Soft Tissue Sinus Tracts The formation of abnormal channels in the soft tissue due to infection, which may need to be addressed during the procedure.

2. Procedure

The procedure for CPT® Code 25150 involves several critical steps to ensure effective treatment of osteomyelitis in the ulna. The following outlines the procedural steps:

  • Step 1: Incision The surgeon begins by making an incision in the skin over the site of the osteomyelitis. This incision is carefully extended through the soft tissue to gain access to the underlying bone.
  • Step 2: Resection of Soft Tissue Once the incision is made, any soft tissue sinus tracts and devitalized soft tissue are resected. This step is crucial to expose the area of necrotic and infected bone, ensuring that all affected tissue is addressed.
  • Step 3: Exposure of Infected Bone After resecting the soft tissue, the surgeon exposes the necrotic and infected bone. This exposure is necessary for the subsequent steps of the procedure.
  • Step 4: Drilling and Excavation A series of drill holes are created in the infected bone. The bone between these drill holes is then excavated using an osteotome, which helps to form an oval window in the bone. The extent of excavation is determined by the severity of the infection.
  • Step 5: Removal of Devitalized Tissue A curette may be utilized to remove any devitalized tissue from the medullary canal, ensuring that all infected material is cleared from the surgical site.
  • Step 6: Irrigation Once all necrotic and infected tissue has been removed, the wound is copiously irrigated with sterile saline or an antibiotic solution. This irrigation helps to cleanse the area and reduce the risk of post-operative infection.
  • Step 7: Closure and Drain Placement Finally, the surgical wound is loosely closed, and a drain is placed to allow for the drainage of any excess fluid that may accumulate post-operatively.

3. Post-Procedure

After the completion of the procedure, post-operative care is essential for optimal recovery. The patient will typically be monitored for any signs of infection or complications. The surgical site should be kept clean and dry, and the drain will be monitored for output. Pain management may be necessary, and the patient may be prescribed antibiotics to prevent infection. Follow-up appointments will be scheduled to assess healing and determine if further interventions are required. The expected recovery time may vary depending on the extent of the infection and the individual patient's health status.

Short Descr PARTIAL REMOVAL OF ULNA
Medium Descr PARTIAL EXCISION BONE ULNA
Long Descr Partial excision (craterization, saucerization, or diaphysectomy) of bone (eg, for osteomyelitis); ulna
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) 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 1
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)
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.
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.
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).
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
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
SG Ambulatory surgical center (asc) facility service
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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