Knowledge Base Article

Q:

Does Medicare cover HBO for arterial insufficiency?

A:

Yes and no – Medicare does not cover chronic arterial insufficiency, but does cover acute peripheral arterial insufficiency.  According to the HBO Local Coverage Determination (LCD) from First Coast (FC), the Medicare Administrative Contractor (MAC) for Jurisdiction N, “acute peripheral arterial insufficiency (APAI) is acute onset of ischemia of an extremity secondary to arterial embolus or thrombus.” HBO for APAI is to be used following a definitive surgical procedure for the condition, such as re-implantation, embolectomy, thrombectomy, decompression of a compartment syndrome or removal of the flow limiting condition of the limb. Immediate surgical intervention is necessary if the extremity is to be saved following APAI.

The FC LCD also states that, “HBO is indicated within the first 4-6 hours of the acute event, and only after documented restoration of the blood circulation.” A recent Palmetto HBO Training Module indicates that treatments for APAI may occur up to three times per day immediately after surgery before dropping to once daily within 24-48 hours.  The HBO reduces edema and enhances oxygen at the tissue level to counter reactive edema that often presents after surgical restoration of blood flow. This helps prevent or lessen the likelihood of secondary complications such as infection, non-healing wounds, fracture non-union, and necrosis with subsequent amputation.

Medicare medical review of HBO services is widespread:

• It is part of the OIG Work Plan.
• It is on the list of Targeted Probe and Educate (TPE) reviews for First Coast JN, Novitas JH and JL, Palmetto JM, and WPS J5 and J8.
• It is an approved and posted issue for complex review for all 4 Recovery Auditor regions. Details from the Cotiviti issue are “Medical records will be reviewed to determine if Hyperbaric Oxygen Therapy (HBOT) is medically necessary according to Medicare coverage indications.”
• It was one of the first issues reviewed by Strategic Health Solutions, the first CMS Supplemental Medical Review Contractor (SMRC) with an error rate of 58%.

In addition to First Coast’s LCD, there is a National Coverage Determination (NCD 20.29) and Novitas has a coding and billing article.

The Palmetto education module mentioned above includes the expected documentation for HBO for APAI

• Origin of the condition such as reconstruction/graft thrombosis, iatrogenic trauma, native thrombosis, embolism, or peripheral aneurysm with embolism or thrombosis;
• Diagnostic testing such as arteriogram, CT angiogram, and/or MRI angiogram; and
• Previous treatments such as anticoagulation and percutaneous aspiration or mechanical thromboembolectomy.

Also, there must be a detailed physician’s order for the HBO and a treatment plan with expected goals for HBO therapy.

Remember HBO treatment for chronic arterial insufficiency is not considered medically reasonable and necessary for coverage.