S63.012A Subluxation of distal radioulnar joint of left wrist, initial encounter

ICD-10-CM S63.012A: Subluxation of distal radioulnar joint of left wrist, initial encounter

ICD-10-CM code S63.012A identifies an initial encounter for a subluxation of the distal radioulnar joint of the left wrist. The terminology record classifies this concept as an injury or poisoning, and it exists as a narrower concept beneath the parent code S63.012. [S1, S3] A clinical reference notes that distal radius fractures may involve the distal radioulnar joint. [S2] 1 3 2

Plain-language overview

The official terminology record assigns the preferred name subluxation of distal radioulnar joint of left wrist, initial encounter to code S63.012A, classifying it within the injury or poisoning semantic type. 1

What this code represents

Code S63.012A is an active ICD-10-CM terminology concept that represents a subluxation of the distal radioulnar joint of the left wrist during an initial encounter. 1

Within the ICD-10-CM hierarchy, S63.012A is identified as a narrower concept under the parent concept S63.012, which is labeled subluxation of distal radioulnar joint of left wrist. 1

Coding details

The terminology record for S63.012A includes a published abbreviation, subluxation of distal radioulnar joint of left wrist, init, and maintains an active record status. 1

A separate terminology explorer entry confirms the exact code S63.012A within the ICD10CM system, listing the full preferred name as subluxation of distal radioulnar joint of left wrist, initial encounter. 3

Clinical context

A clinical reference notes that wrist injuries, such as distal radius fractures, may involve the distal radioulnar joint, and that such fractures can result in acute wrist pain and swelling. 2

Documentation considerations

The official display label for S63.012A explicitly specifies the left wrist laterality, the distal radioulnar joint, and an initial encounter, providing the exact descriptive elements captured by this code. 1

What the sources add

While the terminology sources define the exact code, its parent concept, and its semantic type, the clinical text provides general context that distal radioulnar joint issues can be associated with acute wrist pain. 1 2

Comparing the two terminology sources shows that both the National Cancer Institute record and the terminology explorer entry list the identical code and preferred name for this specific left wrist subluxation. 1 3

Sources

1. ICD-10-CM S63.012A 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.