S49.90XA vs T33
S49.90XA (Unspecified injury of shoulder and upper arm, unspecified arm, initial encounter) compared with T33 (Superficial frostbite), 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. S49.90XA carries an Excludes2 note covering T33: “frostbite (T33-T34)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| S49.90XAUnspecified injury of shoulder and upper arm, unspecified arm, initial encounter | T33Superficial frostbite | |
|---|---|---|
| Billing status | Billable | Non-billable header Report instead: T33.011A, T33.011D, T33.011S, T33.012A, T33.012D |
| 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 shoulder and upper arm, unspecified arm, initial encounter is a billable ICD-10-CM diagnosis code (S49.90A). | Superficial frostbite is a non-billable ICD-10-CM category code (T33). |
| 7th character | The appropriate 7th character is to be added to each code in subcategory S49.9 | The appropriate 7th character is to be added to each code from category T33 |
| Includes | injuries of axilla injuries of scapular region | frostbite with partial thickness skin loss |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources