S52.699 Other fracture of lower end of unspecified ulna

ICD-10-CM Diagnosis Code S52.699: Other fracture of lower end of unspecified ulna

ICD-10-CM code S52.699 identifies an other fracture of the lower end of the unspecified ulna, categorized as an injury or poisoning concept. This active terminology record has no narrower concepts and falls under the parent code S52.69. Distal ulnar fractures are prevalent upper extremity injuries frequently encountered in emergency departments, often managed alongside radial injuries. 1 2

Plain-language overview

Code S52.699 identifies an injury to the lower end of the ulna bone in the forearm, specifically classifying it as an other fracture when the affected arm is unspecified. 1

What this code represents

The terminology record for S52.699 lists the semantic type as Injury or Poisoning, and the code's preferred name is other fracture of lower end of unspecified ulna. 1

Coding details

S52.699 is an active ICD-10-CM code with no narrower child concepts, and its direct parent concept in the terminology hierarchy is S52.69, representing other fractures of the lower end of the ulna. 1

Clinical context

Distal ulnar fractures are prevalent upper extremity injuries frequently encountered in emergency departments, and clinical education materials emphasize comprehensive management of these injuries alongside radial injuries. 2

Clinical literature notes that there is no standard treatment algorithm for distal ulnar fractures, and nonreducible and unstable distal ulnar fractures benefit from surgical care. 2

Documentation considerations

The S52.699 terminology record specifies an unspecified ulna, while a separate definitions manual lists distinct codes for unspecified fractures of the right ulna and the left ulna. 1 3

What the sources add

While the National Cancer Institute terminology record defines the code's structural hierarchy and active status, the clinical literature provides operational context regarding emergency department prevalence and management complexities of distal ulnar fractures. 1 2

Coverage and utilization context

The CMS MS-DRG definitions manual includes listings for unspecified fractures of the lower end of the right, left, and unspecified ulna, along with torus fractures, within its version 37.0 code set. 3

Sources

1. ICD-10-CM S52.699 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-27.
3. ICD-10-CM/PCS MS-DRG v37.0 Definitions Manual — cms.gov; accessed 2026-07-27.
4. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.