T84.223A Displacement of internal fixation device of bones of foot and toes, initial encounter

ICD-10-CM T84.223A: Displacement of internal fixation device of bones of foot and toes, initial encounter

ICD-10-CM code T84.223A represents the displacement of an internal fixation device within the bones of the foot and toes during an initial encounter. While the supplied CMS manual establishes the broader category of mechanical complications for these devices, it does not explicitly list this specific code. Clinical literature provides context on foot fixation devices, noting their use in fractures and structural corrections, as well as potential complications like fragment displacement. 1 2 3

Plain-language overview

Internal fixation devices are utilized in foot bones to maintain anatomic reduction and stable fixation of fracture pieces, such as in calcaneal fractures. [S1] 1

What this code represents

The target concept T84.223A denotes the displacement of an internal fixation device of bones of foot and toes during an initial encounter, although the supplied CMS excerpt does not explicitly list this specific code. [S3] 3

The supplied CMS manual lists sequela entries for mechanical complications of internal fixation devices of bones of foot and toes, but it does not explicitly mention the initial encounter code T84.223A. [S3] 3

Clinical context

Clinical literature notes that internal fixation devices in the foot, such as screws for calcaneal fractures, are used to prevent displacement of fracture pieces. [S1] 1

Studies on pediatric flexible flatfoot surgeries indicate that internal fixation devices can be removed after deformity correction or fusion, with some patients reporting tarsal sinus pain. [S2] 2

Documentation considerations

The CMS manual distinguishes between displacement of internal fixation devices in various anatomical locations, including separate sequela entries for foot and toes versus hand and fingers. [S3] 3

What the sources add

The CMS source provides a categorical hierarchy for mechanical complications of internal fixation devices, while the clinical sources detail specific foot fixation applications like sustentaculum tali screws and flatfoot implants. [S1, S2, S3] 1 2 3

The clinical literature and CMS manual differ in focus; the clinical studies evaluate biomechanical outcomes and pain associated with foot fixation devices, whereas the CMS manual lists diagnostic codes for mechanical complications. [S1, S2, S3] 1 2 3

Sources

1. Finite element analysis and clinical application of percutaneous sustentaculum tali screw fixation for Sanders type II and III calcaneal fractures — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
2. A retrospective cohort study comparing the therapeutic efficacy of three surgical interventions for pediatric flexible flatfoot — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
3. ICD-10-CM/PCS MS-DRGv33 Definitions Manual — cms.gov; accessed 2026-07-25.