Pulmonary and DME Claim Denials: Equipment Documentation Payers Require

Why DME Claims Are Denial-Prone

Durable medical equipment claims — oxygen therapy, CPAP/BiPAP devices, nebulizers — carry documentation requirements that go beyond a typical office visit, often including specific testing results, a formal certificate of medical necessity, and proof of an in-person or qualifying telehealth evaluation within a defined window before the equipment order.

Common Denial Triggers

Frequent issues include missing or incomplete certificate of medical necessity documentation, qualifying test results (oxygen saturation levels, sleep study data) not clearly included or not meeting the payer's specific threshold, and equipment ordered outside the payer's required evaluation window relative to the qualifying test.

What a Complete DME Packet Includes

Beyond the physician's order, a strong packet typically includes the qualifying diagnostic test results with clear values (not just a summary statement that the patient qualifies), documentation of the clinical evaluation supporting the order, and, where applicable, documentation of any prior therapies attempted if the payer requires step therapy before approving certain equipment.

Why Timing of Documentation Matters as Much as Content

A significant share of DME denials trace back to timing — the qualifying test or evaluation falling outside the payer's required window relative to the order — rather than the clinical content itself being insufficient. Building a workflow that checks these dates before the order is placed, not after a denial, prevents a category of denial that's often difficult to fix retroactively.