S83 vs S90
S83 (Dislocation and sprain of joints and ligaments of knee) compared with S90 (Superficial injury of ankle, foot and toes), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. S83 carries an Excludes2 note covering S90: “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| S83Dislocation and sprain of joints and ligaments of knee | S90Superficial injury of ankle, foot and toes | |
|---|---|---|
| Billing status | Non-billable header Report instead: S83.001A, S83.001D, S83.001S, S83.002A, S83.002D | Non-billable header Report instead: S90.00XA, S90.00XD, S90.00XS, S90.01XA, S90.01XD |
| 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 | Dislocation and sprain of joints and ligaments of knee is a non-billable ICD-10-CM category code (S83). | Superficial injury of ankle, foot and toes is a non-billable ICD-10-CM category code (S90). |
| 7th character | The appropriate 7th character is to be added to each code from category S83 | The appropriate 7th character is to be added to each code from category S90 |
| Includes | avulsion of joint or ligament of knee laceration of cartilage, joint or ligament of knee sprain of cartilage, joint or ligament of knee traumatic hemarthrosis of joint or ligament of knee | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources