Any compensation for expenses related to medical treatment falls into the tax-exempt category, but an exception exists. According to the IRS: "If you receive a settlement for personal physical injuries or physical sickness, you must include in income that portion of the settlement that is for medical expenses you deducted in any prior year(s) to the extent the deduction(s) provided a tax benefit. If part of the proceeds is for medical expenses you paid in more than one year, you must allocate on a pro rata basis the part of the proceeds for medical expenses to each of the years you paid medical expenses. See Recoveries in Publication 525 for details on how to calculate the amount to report. The tax benefit amount should be reported as 'Other Income' on line 21 of Form 1040."