S21.002S (Unspecified open wound of left breast, sequela) compared with S21.009S (Unspecified open wound of unspecified breast, sequela), from the official CMS tabular data. S21.002S and S21.009S 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. S21.002S and S21.009S 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.
| S21.002SUnspecified open wound of left breast, sequela | S21.009SUnspecified open wound of unspecified breast, sequela | |
|---|---|---|
| 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 | Unspecified open wound of left breast, sequela is a billable ICD-10-CM diagnosis code (S21.002S). | Unspecified open wound of unspecified breast, sequela is a billable ICD-10-CM diagnosis code (S21.009S). |
| 7th character | The appropriate 7th character is to be added to each code from category S21 | The appropriate 7th character is to be added to each code from category S21 |
| 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