T34.7 vs T34.8
T34.7 (Frostbite with tissue necrosis of knee and lower leg) compared with T34.8 (Frostbite with tissue necrosis of ankle, foot, and toe(s)), 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. T34.7 carries an Excludes2 note covering T34.8: “frostbite with tissue necrosis of ankle and foot (T34.8-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| T34.7Frostbite with tissue necrosis of knee and lower leg | T34.8Frostbite with tissue necrosis of ankle, foot, and toe(s) | |
|---|---|---|
| Billing status | Non-billable header Report instead: T34.70XA, T34.70XD, T34.70XS, T34.71XA, T34.71XD | Non-billable header Report instead: T34.811A, T34.811D, T34.811S, T34.812A, T34.812D |
| 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 | Frostbite with tissue necrosis of knee and lower leg is a non-billable ICD-10-CM category code (T34.7). | Frostbite with tissue necrosis of ankle, foot, and toe(s) is a non-billable ICD-10-CM category code (T34.8). |
| 7th character | The appropriate 7th character is to be added to each code from category T34 | The appropriate 7th character is to be added to each code from category T34 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources