CMC Complex Rehab Technology Products 2 — Questions and Answers
Question 1: Which funding source is the PRIMARY payer for CRT products for Medicare-eligible beneficiaries who meet medical necessity criteria?
- Medicaid HCBS waiver
- Medicare Part B DME benefit (Correct answer)
- State vocational rehabilitation
- Private disability insurance
Correct answer: Medicare Part B DME benefit
Medicare Part B covers CRT products as durable medical equipment when medical necessity criteria are met and ordered by a physician.
Question 2: A power wheelchair user reports that the chair drifts to the left during straight-line driving. What is the MOST likely cause?
- Dead battery cell in one module
- Motor brush wear on the left drive motor
- Joystick calibration error or drive wheel friction imbalance (Correct answer)
- Seat tilt actuator malfunction
Correct answer: Joystick calibration error or drive wheel friction imbalance
Drifting during straight-line driving is most commonly caused by joystick calibration offset or unequal tire inflation/friction between drive wheels.
Question 3: The RESNA CRT Supplier Standards require that a supplier perform a 'technology match' process. What does this involve?
- Selecting the least expensive qualifying product
- Matching the individual's needs, goals, and environment to appropriate CRT features (Correct answer)
- Recommending the most technologically advanced device available
- Confirming the product is listed on the Medicare HCPCS fee schedule
Correct answer: Matching the individual's needs, goals, and environment to appropriate CRT features
Technology match ensures the selected CRT product aligns with the user's functional needs, goals, living environment, and lifestyle.
Question 4: Under Medicare coverage guidelines, a Group 3 power wheelchair is distinguished from a Group 2 power wheelchair primarily by its ability to:
- Operate outdoors on unpaved terrain
- Be used by beneficiaries with upper extremity weakness
- Accommodate power positioning features such as tilt, recline, or elevation (Correct answer)
- Support a weight capacity exceeding 300 lbs
Correct answer: Accommodate power positioning features such as tilt, recline, or elevation
Group 3 power wheelchairs are clinically distinguished by their capability to integrate power positioning systems like tilt-in-space, power recline, and seat elevation.
Question 5: A CRT supplier receives a Letter of Medical Necessity (LMN) that lacks specific functional limitations. What is the BEST course of action?
- Process the claim using the diagnosis code alone
- Contact the prescribing clinician to obtain the missing clinical documentation (Correct answer)
- Substitute a generic LMN template approved by the payer
- Deliver the device and document the gap post-delivery
Correct answer: Contact the prescribing clinician to obtain the missing clinical documentation
The CRT supplier must collaborate with the prescribing clinician to ensure the LMN includes all required functional limitation documentation before claim submission.
Question 6: Which seating component is MOST indicated for a user who presents with significant posterior pelvic tilt and sacral sitting posture?
- Planar seat cushion with flat back support
- Solid seat base with anterior wedge and lumbar support (Correct answer)
- Sling seat with standard linear backrest
- Pressure-relief alternating air cushion only
Correct answer: Solid seat base with anterior wedge and lumbar support
A solid seat base with an anterior wedge promotes anterior pelvic tilt, and a lumbar support helps restore neutral lumbar lordosis for users who sacral-sit.
Question 7: When evaluating a client for a custom manual wheelchair, which measurement is MOST critical for determining proper seat width?
- Shoulder width at the acromion processes
- Hip width with 1/2 inch clearance on each side (Correct answer)
- Thigh length from ischium to popliteal fossa
- Chest circumference at the widest point
Correct answer: Hip width with 1/2 inch clearance on each side
Seat width is determined by measuring the widest point of the hips or thighs and adding approximately 1/2 inch of clearance on each side to prevent pressure and allow mobility.
CMC Complex Rehab Technology Products 2
Which funding source is the PRIMARY payer for CRT products for Medicare-eligible beneficiaries who meet medical necessity criteria?