S89.90XA vs S90
S89.90XA (Unspecified injury of unspecified lower leg, initial encounter) 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. S89.90XA 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
| S89.90XAUnspecified injury of unspecified lower leg, initial encounter | S90Superficial injury of ankle, foot and toes | |
|---|---|---|
| Billing status | Billable | 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 | Unspecified injury of unspecified lower leg, initial encounter is a billable ICD-10-CM diagnosis code (S89.90A). | 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 in subcategory S89.9 | The appropriate 7th character is to be added to each code from category S90 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources