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Official Description

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

© Copyright 2026 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.

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