S43.021A (Posterior subluxation of right humerus, initial encounter) compared with S43.022A (Posterior subluxation of left humerus, initial encounter), from the official CMS tabular data. S43.021A and S43.022A code the same condition on opposite sides. MedCoder-derived
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. S43.021A and S43.022A name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| S43.021APosterior subluxation of right humerus, initial encounter | S43.022APosterior subluxation of left humerus, initial encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, poisoning and certain other consequences of external causes | S00-T88 — Injury, poisoning and certain other consequences of external causes |
| Definition | Posterior subluxation of right humerus, initial encounter is a billable ICD-10-CM diagnosis code (S43.021A). | Posterior subluxation of left humerus, initial encounter is a billable ICD-10-CM diagnosis code (S43.022A). |
| 7th character | The appropriate 7th character is to be added to each code from category S43 | The appropriate 7th character is to be added to each code from category S43 |
| Includes | avulsion of joint or ligament of shoulder girdle laceration of cartilage, joint or ligament of shoulder girdle sprain of cartilage, joint or ligament of shoulder girdle traumatic hemarthrosis of joint or ligament of shoulder girdle | avulsion of joint or ligament of shoulder girdle laceration of cartilage, joint or ligament of shoulder girdle sprain of cartilage, joint or ligament of shoulder girdle traumatic hemarthrosis of joint or ligament of shoulder girdle |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources