S80.841S (External constriction, right lower leg, sequela) compared with S80.842S (External constriction, left lower leg, sequela), from the official CMS tabular data. S80.841S and S80.842S 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. S80.841S and S80.842S 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.
| S80.841SExternal constriction, right lower leg, sequela | S80.842SExternal constriction, left lower leg, sequela | |
|---|---|---|
| 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 | External constriction, right lower leg, sequela is a billable ICD-10-CM diagnosis code (S80.841S). | External constriction, left lower leg, sequela is a billable ICD-10-CM diagnosis code (S80.842S). |
| 7th character | The appropriate 7th character is to be added to each code from category S80 | The appropriate 7th character is to be added to each code from category S80 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources