New CMS coverage for topical oxygen

Medicare just changed the rules for topical oxygen therapy, and under proposed LCD DL33797, coverage now extends nationwide for stalled diabetic foot ulcers. But clinically right isn't automatically paid — every criterion has to be met, documented, and timed correctly. ### Who qualifies under the new LCD Topical oxygen delivers oxygen straight to the wound bed for diabetic foot ulcers that won't close. To bill it, the patient and wound both have to fit a tight profile: - Stalled healing: less than 50% wound area reduction after four weeks of optimized standard care - Diabetes with HbA1c under 12% - Adequate perfusion at the foot - No disqualifying findings: osteomyelitis, gangrene, active infection, same-limb DVT, or malignancy On the revenue side, one benefit bills as two codes — E0446 for the system and A4575 for the supply. Physician services fold into 99199 with no separate payment, all under DME jurisdiction. ### How WoundScribe makes the coverage payable This is the exact moment a healing trajectory is built to detect. WoundScribe reads the curve and flags the sub-50% stall at week four automatically, then cross-references what it already captured — diabetes status, HbA1c, perfusion, exclusions — against the LCD criteria. From there, it suggests the coverage-ready next step with the documentation payers require already in the chart. Physicians get the right therapy on time, revenue cycle sees cleaner reimbursement, and health systems get defensible documentation for Medicare audits. The right therapy, matched to the coverage that actually pays for it. Start your free trial at WoundScribe AI.