T34.81 (Frostbite with tissue necrosis of ankle) compared with T69 (Other effects of reduced temperature), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Distinct conditions — both may be reported.
“hypothermia and other effects of reduced temperature (T68, T69.-)”
An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.
Source: CMS ICD-10-CM tabular instructional notes
Yes, when both are documented. T34.81 carries an Excludes2 note covering T69: “hypothermia and other effects of reduced temperature (T68, T69.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
| T34.81Frostbite with tissue necrosis of ankle | T69Other effects of reduced temperature | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header Report instead: T69.011A, T69.011D, T69.011S, T69.012A, T69.012D |
| 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 | Frostbite with tissue necrosis of ankle is a non-billable ICD-10-CM category code (T34.81). | Other effects of reduced temperature is a non-billable ICD-10-CM category code (T69). |
| 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 T69 |
| Use additional code | — | code to identify source of exposure: Exposure to excessive cold of man-made origin (W93) Exposure to excessive cold of natural origin (X31) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources