CPAP or BiPAP Setup (first day)

What it is

Positive airway pressure treatment pushes pressurized air through a mask to hold the airway open. CPAP delivers one steady pressure. Bilevel delivers a higher pressure on the breath in and a lower one on the breath out, which suits people who have trouble moving enough air or whose breathing muscles are weak. This code is the professional work of getting that treatment started and running on the day it begins: selecting the mode, fitting a mask, setting or adjusting pressures, watching how the patient tolerates it, and changing the settings when they do not. The device itself, the mask, and the tubing are supplies billed separately.

Why it is done

• To treat obstructive sleep apnea, where the airway repeatedly collapses during sleep
• To support breathing in respiratory failure, where a patient is moving air but not enough of it, as an alternative to a breathing tube
• To manage central sleep apnea, and to support breathing in some people with COPD or heart failure
• To find a mask and a pressure the patient can actually sleep or breathe with, which usually takes trial and adjustment rather than a single setting

What to expect

The first session is largely fitting and tolerance. Masks come as full-face designs, ones that cover only the nose, and small pillows that sit at the nostrils; the goal is one that seals without leaking and without pressing hard enough to hurt. Pressures may be set during a supervised sleep study, adjusted at the bedside in a hospital, or left to a machine that adjusts itself through the night. Early on, people commonly report a dry mouth, air leaking into the eyes, or a sense of fighting the airflow — these are the things the initial-day management is there to work through. This code describes the first day; continued management on later days is coded differently.

Questions worth asking

• Is this charge only for the first day, and will each following day of management generate its own charge?
• Is the machine and mask being rented, purchased, or supplied by the hospital, and is that a separate bill from a durable medical equipment company?
• Was a respiratory therapist involved, and does that generate a charge distinct from the physician's?
• If this was started in the hospital, does the equipment I go home with need a new prescription and a new supplier authorization?