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The rules say that plans must pay for a medical service or item if regular Medicare would pay for it in this case. 
You can find this rule at 42 Code of Federal Regulations (CFR) Section 422.101. 
 
The rules say that medically necessary services are those that are reasonable and necessary for the diagnosis or 
treatment of an illness or injury. Medically necessary services include services to improve the functioning of a 
malformed body member. You can find this rule in the Social Security Act, Section 1862(a)(1)(A). 
 
The rules say that services that are not medically necessary are not covered. The rules also say that 
experimental and investigational devices are not covered. You can find this rule at 42 CFR Sections 411.15 and 
411.15(o). 
 
A power seat elevation feature (E2300) and power standing feature (E2301) are non-covered because they are 
not primarily medical in nature. If a wheelchair has an electrical connection device described by code E2310 or 
E2311 and if the sole function of the connection is for a power seat elevation or power standing feature, it will 
be denied as non-covered. 
 
Expandable Controller - An electronic system that is capable of accommodating one or more of the following 
additional functions: 
a. Proportional input devices (e.g., mini, compact, or short throw joysticks, touchpads, chin control, head 
control, etc.) other than a standard proportional joystick. 
b. Non-proportional input devices (e.g., sip and puff, head array, etc.) 
c. Operate 3 or more powered seating actuators through the drive control. (Note: Control of the power seating 
actuators though the Control Input Device would require the use of an additional component, E2310 or E2311. 
An expandable controller may also be able to operate one or more of the following: 
d. A separate display (i.e., for alternate control devices) 
e. Other electronic devices (e.g., control of an augmentative speech device or computer through the chair's 
drive control) 
f. An attendant control 
 
A power tilt seating system (E1002) includes: a solid seat platform and a solid back; any frame width and 
depth; detachable or flip-up fixed height or adjustable height armrests; fixed or swingaway detachable legrests; 
fixed or flip-up footplates; a motor and related electronics with or without variable speed programmability; a 
switch control which is independent of the power wheelchair drive control interface; 
 
A power leg elevation feature (E1010, E1012) involves dedicated motor(s) and related electronics with or without variable speed programmability which allows the legrest to be raised and lowered independently of the 
recline and/or tilt of the seating system. It includes a switch control which may or may not be integrated with 
the power tilt and/or recline control(s). 
 
You can find this information in the Local Coverage Article: Wheelchair Options/Accessories - Policy Article 
(A52504). 
 
If you want to read these Medicare rules, you can go to this website www.medicareappeal.com. 
 
The Plan contract says that the Plan covers items and services in accordance with Medicare rules.