MedicaidDocumentationMedium impact
COVID-19: Certificate of Medical Necessity Form (CMN) Signature Requirement
Missouri Medicaid (MO HealthNet)·MO · PM&R (Physical Medicine & Rehab), Orthopedics, Neurology +2 more·Provider Notice
Effective date
May 12, 2023
We identified it
Jun 20, 2026
Summary
MO HealthNet is reinstating the original signature requirement for Certificate of Medical Necessity (CMN) forms for durable medical equipment (DME) effective May 12, 2023. The temporary waiver that allowed non-original signatures during the COVID Public Health Emergency will end, requiring original signatures in Fields 7 and 14 of CMN forms.
Action Required
By May 12, 2023: DME providers must ensure all Certificate of Medical Necessity forms have original signatures in Fields 7 and 14. Update workflow processes to collect wet signatures instead of electronic or copied signatures. Review DME Provider Manual Section 13.15.B for Direct Delivery Requirements and Section 7.2 for CMN process details. Claims for certain DME items without properly signed CMNs may be denied.