DME — Prior Auth to Rental Conversion, Handled

Proven Results

• 42% Average Revenue Increase
• 93.3% Clean Claim Rate
• 53% Reduction in Denials
• 24 Days Faster Payment Collection

Common Billing Challenges

Certificate of Medical Necessity

CMN requirements are complex and vary by equipment type, requiring detailed physician documentation and patient information.

Prior Authorization Delays

Most DME items require prior authorization with extensive documentation, causing significant delays in equipment delivery.

Rental vs Purchase Rules

Complex Medicare and commercial payer rules for rental caps, purchase options, and capped rental periods.

Same/Similar Equipment Denials

Payers require proof that beneficiaries do not have similar equipment before approving new DME items.

Delivery Documentation

Proof of delivery, beneficiary signatures, and setup documentation are required but often incomplete.

Modifier Complexity

DME billing requires specialized HCPCS modifiers for rental periods, repairs, replacements, and upgrades.

Our Solutions

DME Coding Specialists

Our team includes certified coders with specialized training in HCPCS codes, modifiers, and DME-specific billing rules.

• Accurate HCPCS code selection
• Proper modifier application
• Rental vs purchase determination
• Reduced coding errors and denials

CMN Documentation Management

Comprehensive management of Certificates of Medical Necessity with automated tracking and physician follow-up.

• Complete CMN documentation
• Physician signature tracking
• Medical necessity validation
• Reduced documentation denials

Prior Authorization System

Dedicated PA team with automated tracking ensures timely approvals for all DME equipment and supplies.

• Faster authorization approvals
• Clinical documentation support
• Automated deadline tracking
• Higher approval rates

Compliance & Audit Protection

Comprehensive compliance monitoring and audit support to protect against recoupments and ensure regulatory adherence.

• Same/similar equipment checks
• Delivery documentation tracking
• Medical necessity verification
• Appeal support for denials

Specialized Services

Mobility Equipment Billing

Expert billing for wheelchairs, walkers, hospital beds, and mobility aids with proper CMN and PA management.

• Wheelchair billing
• Hospital bed rentals
• Walkers and canes
• Scooter billing

Respiratory Equipment

Specialized billing for oxygen equipment, CPAP/BiPAP devices, and nebulizers with compliance tracking.

• Oxygen equipment
• CPAP/BiPAP billing
• Nebulizer supplies
• Ventilator billing

Diabetic Supplies

Complete billing for diabetic testing supplies, insulin pumps, and continuous glucose monitors.

• Test strips and lancets
• Insulin pump billing
• CGM systems
• Diabetic footwear

Orthotic & Prosthetic

Expert billing for custom orthotics, prosthetic devices, and bracing with proper documentation.

• Custom orthotics
• Prosthetic devices
• Bracing and supports
• Compression garments

Common CPT Codes Reference

Key codes include E0601 (CPAP device, home use), E0470 (Respiratory assist device, bi-level pressure capability, wit), E0471 (Respiratory assist device, bi-level with backup rate), E0561 (Humidifier, durable, for use with CPAP device), E1390 (Oxygen concentrator, single delivery port), K0001 (Standard manual wheelchair), K0005 (Ultralight manual wheelchair), E1232 (Wheelchair, pediatric, tilt-in-space), L1832 (Orthosis, knee, prefabricated, with joints), A4570 (Splint). Proper code selection requires understanding of bundling rules, NCCI edits, and modifier usage.

Expert Billing Insights

Certificate of Medical Necessity (CMN) and HCPCS Coding

DME billing for Medicare requires a Certificate of Medical Necessity (CMN) for many high-cost items including oxygen equipment, CPAP/BiPAP devices, and hospital beds. The CMN must be signed by the ordering physician and contain specific clinical information about the patient's diagnosis, functional limitation, and why the equipment is necessary. Incorrect or incomplete CMNs are the leading cause of DME audit failures. Each specific item requires a different CMS-484 form (home oxygen), CMS-846 form (CPAP), or other product-specific form.

• Home oxygen (E1390): CMS-484 form; SpO2 test results at rest, exercise, or nocturnal required
• CPAP/BiPAP (E0601/E0470): CMS-846 form; sleep study documentation required
• Hospital bed (E0260): Documentation of medical condition requiring head/foot adjustment
• CMN must be on file before or at time of delivery — cannot be obtained retroactively

Advance Beneficiary Notice (ABN) Requirements for Non-Covered DME

Medicare does not cover all DME items, and coverage is subject to Local Coverage Determinations (LCDs). When DME may not be covered (diagnosis doesn't appear on LCD, patient doesn't meet criteria, or item is excluded), an Advance Beneficiary Notice must be provided to the patient before furnishing the item. The ABN explains the non-coverage reason and allows the patient to choose whether to receive the item and pay out of pocket, or to forego it. Without a valid ABN, the supplier cannot bill the patient if Medicare denies the claim.

• ABN required when coverage is uncertain — not just when denial is certain
• Patient must sign ABN before receiving the non-covered item
• Use modifier GA on claim when ABN on file; GZ when no ABN (claim will deny and patient cannot be billed)
• ABN must specify the item, reason it may not be covered, and estimated patient cost

Complex Rehab Technology (CRT): Power Wheelchairs and Custom Seating

Complex Rehab Technology billing is one of the most specialized areas in DME. Power wheelchairs and custom seating systems require a face-to-face evaluation by the treating physician or NPP, a separate assessment by an ATP (Assistive Technology Professional), and documentation of the patient's functional limitations in the home environment. CRT items have high reimbursement values but also the highest documentation burden and audit rates. In-person evaluation by a qualified rehabilitation supplier is required — telephone or telehealth evaluations do not qualify.

• Power wheelchair (K0822–K0831): physician face-to-face evaluation required within 45 days of order
• ATP assessment: qualified supplier must document mobility limitations and CRT rationale
• Home assessment: document whether patient's home environment supports the CRT being prescribed
• Functional mobility in home: patient cannot be ambulatory to qualify — document functional status clearly

Payer-Specific Billing Tips

Medicare Part B

• DME Medicare coverage: item must be medically necessary, prescribed by treating physician, and FDA-cleared
• Capped rental: most DME rents for 13 months then transfers to patient ownership
• Home oxygen: 36-month cap, then patient owns concentrator; portable oxygen has separate coverage
• CPAP compliance: 90-day trial required; compliance data must show ≥4 hours/night on ≥70% of nights

Medicaid

• Medicaid DME coverage and prior auth requirements vary significantly by state
• Pediatric DME under EPSDT: comprehensive coverage including CRT not typically restricted by age
• Medicaid managed care DME: often carved out to separate DME networks — verify per plan
• Prior authorization required for most Medicaid DME — submit with clinical documentation

Commercial Payers

• Commercial DME prior auth: required for all high-cost items (power wheelchairs, CPAP, home oxygen)
• CPAP prior auth: submit sleep study (PSG or HST) results with AHI ≥15 or AHI ≥5 with symptoms
• Commercial coverage for custom orthotics: requires physician documentation of structural deformity
• DME network: most commercial plans have designated DME networks — out-of-network billing creates balance billing

DME Audit Compliance

• RAC and CERT audits heavily target DME — maintain complete documentation for 7 years
• Delivery tickets: signed proof of delivery required for every item billed to Medicare
• Face-to-face exam note: physician note documenting need must be maintained in supplier file
• Competitive bidding areas (CBAs): if in a CBA, must be contracted with CMS or cannot bill Medicare

Related Billing Resources

• Home Health Billing
• Physical Therapy Billing
• Pulmonology Billing
• Prior Authorization Services
• Eligibility Verification
• CPT Codes Reference Guide
• Medical Billing Glossary

Key Services

• medical equipment billing
• DME provider billing
• HCPCS coding
• durable medical equipment
• diabetic supply billing
• mobility equipment billing