S31.15 vs T33
S31.15 (Open bite of abdominal wall without penetration into peritoneal cavity) 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. S31.15 carries an Excludes2 note covering T33: “frostbite (T33-T34)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| S31.15Open bite of abdominal wall without penetration into peritoneal cavity | T33Superficial frostbite | |
|---|---|---|
| Billing status | Non-billable header Report instead: S31.150A, S31.150D, S31.150S, S31.151A, S31.151D | 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 | Open bite of abdominal wall without penetration into peritoneal cavity is a non-billable ICD-10-CM category code (S31.15). | 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 S31 | The appropriate 7th character is to be added to each code from category T33 |
| Includes | injuries to the abdominal wall injuries to the anus injuries to the buttock injuries to the external genitalia | 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