S43.023S Posterior subluxation of unspecified humerus, sequela

ICD-10-CM S43.023S: Posterior Subluxation of Unspecified Humerus, Sequela

ICD-10-CM code S43.023S is an active terminology concept for the 2026 version, designated as an injury or poisoning semantic type. The official label is posterior subluxation of unspecified humerus, sequela. A payer policy lists this code, and clinical literature describes posterior humeral head subluxation as a chronic condition. 1 2 3

Plain-language overview

The official terminology record assigns S43.023S the preferred name of posterior subluxation of unspecified humerus, sequela, and classifies its semantic type as an injury or poisoning concept. 1

What this code represents

In the ICD-10-CM hierarchy, S43.023S is a narrower concept under the parent code S43.023, which denotes posterior subluxation of an unspecified humerus. 1

Coding details

The S43.023S terminology record holds an active status for the 2026 ICD-10-CM version and lists narrower concepts within this specific terminology structure. 1

Documentation considerations

Clinical literature indicates that identifying posterior humeral head subluxation involves thorough clinical evaluation, including medical history, physical examination, instability tests, and imaging scans. 2

Clinical context

Clinical literature describes static posterior humeral subluxation as a chronic condition involving posterior decentration of the humeral head that develops gradually over years without discrete instability events. 2

Coverage and utilization context

A payer chiropractic services policy document lists S43.023S on a page alongside other joint subluxation codes such as S43.111A, but the text provides no information regarding coverage guarantees. 3

What the sources add

While the terminology record defines the code structure and label, the clinical article adds context that posterior humeral head subluxation can be identified through physical examination, instability tests, and imaging scans. 1 2

Comparing the sources reveals that the official terminology record provides the exact code definition, whereas the payer policy demonstrates its operational inclusion in a chiropractic services document. 1 3

Sources

1. ICD-10-CM S43.023S terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Preosteoarthritic static posterior humeral subluxation in young adults (posterior shoulder instability type C1): associative factors, diagnosis, and treatment — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Chiropractic Services Corporate Medical Policy — bcbsvt.com; accessed 2026-07-27.