RSA 259:124 Walking Disability.

"Walking disability," as used in RSA 261:88, means a severe physical impairment including partial paralysis, lower limb amputation, chronic heart disease, emphysema, arthritis, rheumatism or other debilitating condition:
I. Which limits personal mobility and results in an inability to travel without the use of a wheelchair, crutch, walker, prosthetic, orthotic or other assistive device, and which is verifiable by a comparable disability rating from the Department of Veterans Affairs, Social Security Administration, or Workers' Compensation Board;
II. Caused by a cardiovascular impairment to the extent that functional limitations are rated in either class III or class IV standards as accepted by the American Heart Association; or
III. Caused by lung dysfunction to t