Wash. Rev. Code § 82.08.0283
(1) The tax levied by RCW 82.08.020 shall not apply to sales of:
(4) The definitions in this subsection apply throughout this section.
(a) "Prosthetic device" means a replacement, corrective, or supportive device, including repair and replacement parts for a prosthetic device, worn on or in the body to:
(b) "Durable medical equipment" means equipment, including repair and replacement parts for durable medical equipment that:
(c) "Mobility enhancing equipment" means equipment, including repair and replacement parts for mobility enhancing equipment that:
[ 2007 c 6 s 1101; 2004 c 153 s 101; 2003 c 168 s 409; 2001 c 75 s 1; 1998 c 168 s 2; 1997 c 224 s 1; 1996 c 162 s 1; 1991 c 250 s 2; 1986 c 255 s 1; 1980 c 86 s 1; 1980 c 37 s 48. Formerly RCW 82.08.030(30).]
Part headings not law—Savings—Effective date—Severability—2007 c 6: See notes following RCW 82.32.020.
Findings—Intent—2007 c 6: See note following RCW 82.14.390.
Retroactive effective date—Effective date—2004 c 153: See note following RCW 82.08.0293.
Effective dates—Part headings not law—2003 c 168: See notes following RCW 82.08.010.
Effective date—2001 c 75: "This act is necessary for the immediate preservation of the public peace, health, or safety, or support of the state government and its existing public institutions, and takes effect immediately [April 19, 2001]." [ 2001 c 75 s 3.]
Effective date—1998 c 168: See note following RCW 82.04.120.
Effective date—1997 c 224: "This act takes effect October 1, 1998." [ 1997 c 224 s 3.]
Effective date—1996 c 162: "This act shall take effect July 1, 1996." [ 1996 c 162 s 3.]
Finding—Intent—1991 c 250: "(1) The legislature finds:
(a) The existing state policy is to exempt medical oxygen from sales and use tax.
(b) The technology for supplying medical oxygen has changed substantially in recent years. Many consumers of medical oxygen purchase or rent equipment that supplies oxygen rather than purchasing oxygen in gaseous form.
(2) The intent of this act is to bring sales and rental of individual oxygen systems within the existing exemption for medical oxygen, without expanding the essence of the original policy decision that medical oxygen should be exempt from sales and use tax." [ 1991 c 250 s 1.]
Effective date—1986 c 255: "This act shall take effect July 1, 1986." [ 1986 c 255 s 3.]
Intent—1980 c 37: See note following RCW 82.04.4281.