S98.121D Partial traumatic amputation of right great toe, subsequent encounter

ICD-10-CM S98.121D: Partial traumatic amputation of right great toe, subsequent encounter

ICD-10-CM code S98.121D identifies a partial traumatic amputation of the right great toe during a subsequent encounter. The concept is classified as an injury or poisoning. A partial amputation means some soft-tissue connection remains after an accident, unlike a complete severance. This code appears in a Medicare policy article. 1 3 4

Plain-language overview

A traumatic amputation involves the loss of a body part like a toe due to an accident, and a partial amputation means some soft-tissue connection remains despite the severe injury. 3

What this code represents

The official label for S98.121D is partial traumatic amputation of right great toe, subsequent encounter, and the terminology record assigns it the semantic type of injury or poisoning. 1

Coding details

Code S98.121D is an active terminology concept that falls under the parent code S98.121 for partial traumatic amputation of the right great toe, establishing its specific category hierarchy. 1

A Medicare policy article lists S98.121D alongside S98.122A, distinguishing the right great toe subsequent encounter from the left great toe initial encounter. 4

Documentation considerations

Clinical documentation for lower-extremity amputations notes that the level of amputation depends on the viability of the soft tissues used to obtain bone coverage. 2

Clinical context

Trauma to the lower extremity can lead to amputation in over twenty percent of patients when associated with severe wound contamination and significant soft tissue loss. 2

Traumatic amputations usually result from factory, farm, power tool accidents, or motor vehicle accidents, and natural disasters or war can also cause these injuries. 3

What the sources add

While the terminology record defines the code's structural hierarchy, the clinical literature explains that severe traumatic lower extremity injury victims initially candidates for limb salvage may later undergo amputation due to infection. 1 2

Sources

1. ICD-10-CM S98.121D terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Traumatic amputation: MedlinePlus Medical Encyclopedia — medlineplus.gov; accessed 2026-07-27.
4. Article - Orthopedic Footwear - Policy Article (A52481) — cms.gov; accessed 2026-07-27.