S92.201K Fracture of unspecified tarsal bone(s) of right foot, subsequent encounter for fracture with nonunion

ICD-10-CM Code S92.201K: Fracture of unspecified tarsal bone(s) of right foot, subsequent encounter for fracture with nonunion

ICD-10-CM code S92.201K represents a fracture of unspecified tarsal bone(s) of the right foot during a subsequent encounter for fracture with nonunion. The available sources establish the official administrative label for this code and provide general clinical information regarding foot fractures, including biological mechanisms and management of nonunion. 1 3

What this code represents

The official ICD-10-CM label for code S92.201K is fracture of unspecified tarsal bone(s) of right foot, subsequent encounter for fracture with nonunion. This code identifies a specific diagnosis or health-status concept within the administrative coding system. 3

Plain-language overview

The available clinical literature discusses nonunion as a condition where operative intervention involves taking down the nonunion site and applying rigid internal fixation, potentially with bone graft. This clinical text addresses nonunion in the context of general foot fracture management. 1

Clinical context

Clinical literature indicates that bone remodeling responds to repetitive loads, but progressive overload can exceed the elastic range of bone, resulting in plastic deformation and trabecular microfractures. This biological mechanism is discussed in the context of stress fractures of the foot. 1

The clinical sources describe various intrinsic and extrinsic factors associated with foot stress fractures, including metabolic status, anatomic characteristics, training regimens, and footwear. These factors are presented as general clinical information regarding stress fracture etiology. 1

What the sources add

The official terminology source provides the exact administrative label and code hierarchy for S92.201K, whereas the clinical literature provides general biological and management context for foot fractures and nonunion. These sources offer distinct operational and clinical perspectives. 1 3

Documentation considerations

The official code label explicitly specifies an unspecified tarsal bone, right foot laterality, a subsequent encounter, and the presence of nonunion. The available sources do not provide specific clinical documentation guidelines or instructions for this code. 3

Coverage and utilization context

The available sources establish the official code definition and general clinical information but do not address payer-specific coverage policies, reimbursement rules, or utilization management criteria for code S92.201K. 1 3

Questions to verify

Reviewers may need to verify whether clinical documentation explicitly supports a subsequent encounter for nonunion of a right tarsal bone fracture. The available sources do not provide specific documentation checklists or verification instructions for this administrative code. 3

Sources

1. Stress fractures of the foot - current evidence on management — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
2. Republication of “Metatarsal Fractures” — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
3. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-25.