23 MAC Pt. 209, R. 1.51
Humidifier/Vaporizer
Cite as 23 Miss. Admin. Code Pt. 209, R. 1.51
Humidifier/Vaporizer
A. Medicaid defines a humidifier, heated or non-heated, as a device used to increase the
moisture content of the air.
B. Medicaid covers humidifiers for all beneficiaries when ordered by a physician, medically
necessary and prior authorized by the Utilization Management and Quality Improvement
Organization (UM/QIO), the Division of Medicaid or designated entity for rental up to the
purchase amount or for purchase.
C. Room Humidifiers and Vaporizers
1. Medicaid defines a room humidifier as a mechanical device used to increase the moisture
content of the air in a room with a cool mist. Medicaid defines a steam vaporizer as a
mechanical device that creates moisture in the air by heating the water into a hot mist.
Medicaid defines a warm mist humidifier as a type of steam vaporizer that cools the
moist steam before it is released into the room.
2. Room humidifiers and vaporizers are covered for beneficiaries who have a chronic
diagnosis(es) indicating a respiratory condition in which ease of breathing could be
facilitated by increasing the moisture content of the air. The diagnosis may include, but
are not limited to:
a) Chronic bronchitis,
b) Asthmatic bronchitis,
c) Chronic Asthma,
d) Bronchopulmonary dysplasia, or
e) Chronic airway obstruction.
3. Documentation must be provided that the patient or caregiver is able to use and care for
the equipment.
4. Humidifiers are not covered for acute upper respiratory infections, a chronic cough or
colds unrelated to another diagnosis.
D. Medicaid defines a heat and moisture exchanger (HME), or an artificial nose, as a passive
acting humidifier that collects expired heat and moisture and returns it during the following
inspiration. The HME is covered when the beneficiary has:
1. An existing tracheostomy, and
2. Documentation that supplemental, direct humidification is required for the beneficiary’s
tracheostomy.
E. High-Flow or Water Reservoir Humidifiers
1. High-Flow, water reservoir, heated or non-heated humidifiers include, but are not limited
to pass-over, wick, and bubble types. High-flow and water reservoir humidifiers are used
to provide supplemental heat and humidity and are covered as follows:
a) The use of high-flow, water reservoir humidifiers to increase moisture to the airway
of a beneficiary with a tracheostomy is covered when the beneficiary has an existing
tracheostomy and documentation is present that the beneficiary requires
supplemental, direct humidification to the tracheostomy.
b) A high-flow, water reservoir humidifier is covered for C-PAP and Bi-PAP devices if
criteria for coverage of the C-PAP or BI-PAP device are satisfied and documentation
is present that the beneficiary requires supplemental humidification.
c) A high-flow, water reservoir humidifier is covered in conjunction with ventilators if
criteria for coverage of the ventilator are satisfied and documentation is present that
the beneficiary requires supplemental humidification.
2. Humidifiers are included in the rental or purchase price of that equipment when used in
conjunction with oxygen or IPPB treatments.