S92.313B Displaced fracture of first metatarsal bone, unspecified foot, initial encounter for open fracture

ICD-10-CM S92.313B: Displaced fracture of first metatarsal bone, unspecified foot, initial encounter for open fracture

ICD-10-CM code S92.313B identifies a displaced fracture of the first metatarsal bone in an unspecified foot during the initial encounter for an open fracture. The concept is classified as an injury or poisoning, and it represents a specific, active terminology record within the ICD-10-CM version 2026 system. 1

Plain-language overview

The official terminology record for S92.313B labels this diagnosis as a displaced fracture of the first metatarsal bone, unspecified foot, initial encounter for open fracture. 1

What this code represents

The official preferred name for S92.313B is displaced fracture of first metatarsal bone, unspecified foot, initial encounter for open fracture, and the concept carries the semantic type of injury or poisoning. 1

The code S92.313B is an active terminology record that has narrower concepts within the ICD-10-CM hierarchy and belongs to the parent concept S92.313 for a displaced fracture of the first metatarsal bone. 1

Coding details

An official abbreviation for this specific diagnosis is disp fx of first metatarsal bone, unsp foot, init for opn fx, providing a shortened terminology reference for the same clinical concept. 1

The terminology system lists S92.313B alongside S92.313S, distinguishing the initial encounter for an open fracture from the sequela of a displaced first metatarsal bone fracture in an unspecified foot. 3

Documentation considerations

The official terminology record for S92.313B includes the published abbreviation disp fx of first metatarsal bone, unsp foot, init for opn fx, which may assist in aligning clinical notes with coding terminology. 1

The terminology system distinguishes S92.313B from S92.313S, which may help coders differentiate documentation supporting an initial encounter for an open fracture versus a sequela. 3

What the sources add

While the official terminology record defines the code structure and classification, a clinical evidence article explains that metatarsal fractures account for thirty-eight percent of all stress fractures in athletes. 1 2

A medical reference source mirrors the official terminology by listing S92.313B as an ICD-10-CM code for a displaced fracture of the first metatarsal bone in an unspecified foot during the initial encounter for an open fracture. 1 4

Sources

1. ICD-10-CM S92.313B terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Stress fractures of the foot - current evidence on management — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
4. Accurate ICD-10 Classifications — unboundmedicine.com; accessed 2026-07-27.