S20.401D (Unspecified superficial injuries of right back wall of thorax, subsequent encounter) compared with S20.402D (Unspecified superficial injuries of left back wall of thorax, subsequent encounter), from the official CMS tabular data. S20.401D and S20.402D 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. S20.401D and S20.402D 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.
| S20.401DUnspecified superficial injuries of right back wall of thorax, subsequent encounter | S20.402DUnspecified superficial injuries of left back wall of thorax, subsequent encounter | |
|---|---|---|
| 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 | Unspecified superficial injuries of right back wall of thorax, subsequent encounter is a billable ICD-10-CM diagnosis code (S20.401D). | Unspecified superficial injuries of left back wall of thorax, subsequent encounter is a billable ICD-10-CM diagnosis code (S20.402D). |
| 7th character | The appropriate 7th character is to be added to each code from category S20 | The appropriate 7th character is to be added to each code from category S20 |
| Includes | injuries of breast injuries of chest (wall) injuries of interscapular area | injuries of breast injuries of chest (wall) injuries of interscapular area |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources