Machines with "back up rates" are capable of acting like a noninvasive ventilator by triggering inhalations by drastically jacking up the IPAP while leaving the EPAP alone. Part of the clinical settings give parameters on when the machine will attempt to trigger inhalations.Stevoreno_55 wrote:What's the billable code for BIPAP?robysue wrote: The VPAPs and the VPAP Adapts (and even rarer) machines all require a different prescription than that required for the S9 machines that can be billed under HCPC code E0601. The only S9 machines that can be billed under E0601 are the S9 Escape, the S9 Escape Auto, the S9 Elite, and the S9 AutoSet.What do you mean by the phrase "back up rates"?A quick google search led to this link: https://www.cms.gov/Outreach-and-Educat ... 905064.pdf
According to this document, the HCPC code for bi-levels without back up rates is: E0470
"Bi-level without back-up" includes the PR System One BiPAP Pro, the PR System One BiPAP Auto, the Resmed S9 VPAP S, and the Resmed VPAP Auto.
In some modes of operation, the back up rate is a fixed number: If the back up rate is set to 12 breaths per minute, and your respiratory rate falls below that, the machine will start triggering breaths at a rate of 12 breaths per minute: In other words, the machine will start cycling between (a very high) IPAP and (fixed) EPAP even if it is NOT detecting the start of patient initiated inhalations or exhalations. In some modes of operation, the back up rate is determined on the fly by a moving average of some sort, but the principle is the same: If the patient's breathing is not sufficiently stable, the machine starts triggering inhalations by cycling between a very high IPAP and a fixed EPAP.
Machines with back up rates are needed to treat central sleep apnea (CSA) as well as many of the 15% of PAPers who develop complex sleep apnea (CompSA) after starting PAP therapy for OSA. (CompSA is diagnosed when there was no problem with centrals on the diagnostic sleep study, but the patient winds up with a clinically significant number of central apneas when they use PAP therapy to treat the OSA.)
