An update from Noridian Administrative Services said the Jurisdiction D DME MAC may ask for additional documentation for HCPCS code K0823 — power wheelchair, group 2 standard, captain's chair, patient weight capacity up to and including 300 pounds. NAS said it is "closely monitoring" the claims due to a high volume of errors found by the CERT (Comprehensive Error Rate Testing) contractor. If you receive a request from NAS for additional documentation on this code, you must submit the information requested within 30 days to avoid a claim denial. The six items that will be requested are: valid written order, obtained prior to delivery; detailed product description; face-to-face examination; home assessment; proof of delivery; and beneficiary authorization. Read the complete update.