S92.819K Other fracture of unspecified foot, subsequent encounter for fracture with nonunion

ICD-10-CM S92.819K: Other fracture of unspecified foot, subsequent encounter for fracture with nonunion

ICD-10-CM code S92.819K identifies an other fracture of an unspecified foot during a subsequent encounter for fracture with nonunion. The terminology record is active and classifies this concept as an Injury or Poisoning. This code is distinct from related foot fracture codes specifying laterality or different healing outcomes. 1 5

Plain-language overview

This diagnosis code represents a subsequent encounter for an other fracture of an unspecified foot where the clinical status is nonunion, as defined by the official terminology record. 1

What this code represents

The official display label for S92.819K is other fracture of unspecified foot, subsequent encounter for fracture with nonunion, and the concept carries the semantic type of Injury or Poisoning. 1 3

In the ICD-10-CM hierarchy, S92.819K is a narrower concept under the parent code S92.819, which is designated as other fracture of unspecified foot without the subsequent encounter nonunion specification. 1

Coding details

S92.819K is distinct from S92.819D, S92.819G, and S92.819P, which represent subsequent encounters for routine healing, delayed healing, and malunion of an unspecified foot fracture, respectively. 5

S92.819K differs from laterality-specific nonunion codes S92.811K and S92.812K because it does not specify whether the other fracture with nonunion is on the right or left foot. 5

Clinical context

Clinical literature indicates that nonunion is a recognized complication of foot fractures, noting that certain vascular watershed areas and specific fracture patterns contribute to elevated nonunion rates. 2

Documentation considerations

The terminology record establishes the code label as other fracture of unspecified foot, subsequent encounter for fracture with nonunion, distinguishing it from routine healing, delayed healing, and malunion variants. 1 5

Coverage and utilization context

A payer policy document lists S92.819K among emergency room diagnoses not requiring review, providing an operational utilization status for this specific clinical concept. 6

What the sources add

While the terminology sources define the code structure and nonunion label, the clinical source adds context that nonunion involves specific fracture patterns, and the payer source provides operational utilization status for emergency encounters. 1 2 6

Sources

1. ICD-10-CM S92.819K terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-27.
3. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
4. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
5. ICD-10-CM 2024 | S92 - Fracture of foot and toe, except ankle — unboundmedicine.com; accessed 2026-07-27.
6. List of Emergency Room Diagnosis Not Requiring Review — uhcprovider.com; accessed 2026-07-27.