S20.363 vs T33
S20.363 (Insect bite (nonvenomous) of bilateral front wall of thorax) 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. S20.363 carries an Excludes2 note covering T33: “frostbite (T33-T34)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| S20.363Insect bite (nonvenomous) of bilateral front wall of thorax | T33Superficial frostbite | |
|---|---|---|
| Billing status | Non-billable header | 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 | Insect bite (nonvenomous) of bilateral front wall of thorax is a non-billable ICD-10-CM category code (S20.363). | 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 from category S20 | The appropriate 7th character is to be added to each code from category T33 |
| Includes | injuries of breast injuries of chest (wall) injuries of interscapular area | 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