S20 vs T34
S20 (Superficial injury of thorax) compared with T34 (Frostbite with tissue necrosis), 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 carries an Excludes2 note covering T34: “frostbite (T33-T34)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| S20Superficial injury of thorax | T34Frostbite with tissue necrosis | |
|---|---|---|
| Billing status | Non-billable header Report instead: S20.00XA, S20.00XD, S20.00XS, S20.01XA, S20.01XD | Non-billable header Report instead: T34.011A, T34.011D, T34.011S, T34.012A, T34.012D |
| 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 | Superficial injury of thorax is a non-billable ICD-10-CM category code (S20). | Frostbite with tissue necrosis is a non-billable ICD-10-CM category code (T34). |
| 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 T34 |
| Includes | injuries of breast injuries of chest (wall) injuries of interscapular area | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources