S62.355P Nondisplaced fracture of shaft of fourth metacarpal bone, left hand, subsequent encounter for fracture with malunion

ICD-10-CM S62.355P: Nondisplaced fracture of shaft of fourth metacarpal bone, left hand, subsequent encounter for fracture with malunion

ICD-10-CM code S62.355P designates a subsequent encounter for a nondisplaced fracture of the left fourth metacarpal bone shaft that healed with malunion. The fourth metacarpal connects the wrist to the ring finger. This code captures an injury or poisoning event for follow-up care after improper bone healing. 1 5

Plain-language overview

The fourth metacarpal is the bone connecting the wrist to the ring finger, and a fracture of this bone represents a break in that specific anatomical structure. 5

Clinical literature identifies malunion as a potential complication of metacarpal fractures, occurring alongside other healing issues like nonunion, delayed union, hand stiffness, and infection. 2

What this code represents

The official terminology record assigns S62.355P the preferred name of nondisplaced fracture of shaft of fourth metacarpal bone, left hand, subsequent encounter for fracture with malunion. 1

This specific diagnosis code holds an active record status and is classified under the semantic type of injury or poisoning within the ICD-10-CM terminology. 1

Coding details

Within the ICD-10-CM hierarchy, S62.355P is a narrower concept derived from the parent code S62.355, which denotes a nondisplaced fracture of the left fourth metacarpal shaft. 1

The terminology record publishes an abbreviation for this diagnosis, listing it as nondisp fx of shaft of 4th MC bone, l hand, 7thP, and confirms the code has narrower concepts. 1

Documentation considerations

Clinical literature notes that oblique and spiral metacarpal shaft fractures have a higher likelihood of rotational deformity, which may necessitate operative fixation. 2

What the sources add

While the terminology record defines the specific diagnosis code, clinical sources provide operational context by explaining that isolated third and fourth metacarpal fractures are particularly stable due to adjacent intact metacarpals. 1 6

Comparing the code hierarchy reveals that S62.355P for malunion is listed alongside S62.355K, both appearing under the same parent concept for the left fourth metacarpal shaft fracture. 1 4

Sources

1. ICD-10-CM S62.355P 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. Metacarpal Fracture: Symptoms, Treatment & Complications — my.clevelandclinic.org; accessed 2026-07-27.
6. Metacarpal Fractures Treatment & Management — emedicine.medscape.com; accessed 2026-07-27.