S52.542B (Smith's fracture of left radius, initial encounter for open fracture type I or II) compared with S52.549B (Smith's fracture of unspecified radius, initial encounter for open fracture type I or II), from the official CMS tabular data. S52.542B and S52.549B code the same condition on opposite sides.
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. S52.542B and S52.549B 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.
| S52.542BSmith's fracture of left radius, initial encounter for open fracture type I or II | S52.549BSmith's fracture of unspecified radius, initial encounter for open fracture type I or II | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Smith's fracture of left radius, initial encounter for open fracture type I or II is a billable ICD-10-CM diagnosis code (S52.542B). | Smith's fracture of unspecified radius, initial encounter for open fracture type I or II is a billable ICD-10-CM diagnosis code (S52.549B). |
| 7th character | The appropriate 7th character is to be added to all codes from category S52 | The appropriate 7th character is to be added to all codes from category S52 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources