Most payers, including Medicare, allow two units (pairs) per month. Frequency limits vary, so always check the patient’s specific coverage.
HCPCS Code A7033: Pillow for Use on Nasal Cannula-Type Interface, Replacement Only, Pair
Bill HCPCS code A7033 for replacement pillows used with nasal cannula-type CPAP or BiPAP masks. Learn documentation requirements, billing rules, and coding tips for compliant claim submission.
Use Code
Frequently asked questions
No. A7033 applies only to replacement pillows. The initial mask system is billed under A7034 or another appropriate mask code.
Even if the nasal interface is a single molded piece with two extensions, it is still billed as one pair (one unit). The billing rules apply the same as for two separate cushions.
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