W86 vs Y63.2
W86 (Exposure to other specified electric current) compared with Y63.2 (Overdose of radiation given during therapy), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. W86 carries an Excludes1 note covering Y63.2: “failure in dosage of radiation or temperature during surgical and medical care (Y63.2-Y63.5)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| W86Exposure to other specified electric current | Y63.2Overdose of radiation given during therapy | |
|---|---|---|
| Billing status | Non-billable header Report instead: W86.0XXA, W86.0XXD, W86.0XXS, W86.1XXA, W86.1XXD | Billable |
| Classification | V00-Y99 — External Causes of Morbidity (V00-Y99) | V00-Y99 — External Causes of Morbidity (V00-Y99) |
| Definition | Exposure to other specified electric current is a non-billable ICD-10-CM category code (W86). | Overdose of radiation given during therapy is a billable ICD-10-CM diagnosis code (Y63.2). |
| 7th character | The appropriate 7th character is to be added to each code from category W86 | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources