$7.89–$8.49
Choose 94644 for continuous aerosol treatment during the first hour. Use 94640 for inhalation treatment for acute airway obstruction when the service is not continuous first-hour therapy.
On this page
CMS RVU26D · Effective 2026-10-01
94644 Continuous inhalation Medicare reimbursement rates in Maine
Report continuous aerosol medication treatment for acute airway obstruction for the initial hour, such as prolonged nebulized bronchodilator therapy. Compare 94644 office and facility rates across CMS payment localities in Maine.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 94644 in Maine?
Maine has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
$57.26–$61.66
2 of 2 localities have a supported rate.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Respiratory therapy
About 94644: Continuous aerosol inhalation treatment, first hour
Report continuous aerosol medication treatment for acute airway obstruction for the initial hour, such as prolonged nebulized bronchodilator therapy.
94644 describes continuous aerosol medication treatment for acute airway obstruction during the first hour. A clinician may provide it when a patient needs prolonged nebulized medication, such as continuous bronchodilator treatment during an acute asthma exacerbation. In an office or clinic, a respiratory therapist or other qualified clinical staff member may administer the treatment under physician supervision.
Report 94644 for the initial hour of continuous treatment, not for a routine brief inhalation treatment. Document the indication, medication, continuous delivery, and treatment duration so the record supports the service and the time billed. If treatment continues beyond the first hour, 94645 represents each additional hour. This service is billed as an incident-to service only when performed under physician supervision.
CMS billing rules for 94644
- Professional and technical components
- Incident-to service: billed only when performed under physician supervision.
Where the value comes from
- Work RVU0.00 · 0%
- Practice expense (office) RVU1.85 · 99%
- Malpractice RVU0.02 · 1%
3.6K
Medicare services in 2024 · #2061 by national volume
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
94644 compared with similar codes
Office rates for Maine, from the same CMS release.
$15.26–$16.43
94644 reports the initial hour of continuous treatment; 94645 reports each additional hour after that.
$18.24–$19.62
94664 is for demonstrating or evaluating patient use of an inhaler. It does not describe continuous aerosol medication administration.
Compare 94644 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
2 of 2 payment localities
Rest Of Maine →
Office / nonfacility
$57.26
Facility
Unavailable
Southern Maine →
Office / nonfacility
$61.66
Facility
Unavailable
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94644 billing questions
How does 94644 differ from 94640?
94644 is for continuous aerosol treatment during the first hour. 94640 describes an inhalation treatment for acute airway obstruction that is not reported as continuous first-hour therapy.
When is 94645 reported with 94644?
Report 94644 for the first hour and 94645 for each additional hour when continuous treatment extends beyond that initial hour.
What documentation supports 94644?
Document the acute airway indication, medication administered, continuous delivery, and duration. The record should establish that the service was performed under physician supervision.
Can a routine inhaler lesson be reported as 94644?
No. Teaching or evaluating a patient's use of an inhaler is described by 94664; 94644 is for continuous aerosol medication treatment.
Who may provide this service for Medicare billing?
The service is billed as incident-to only when performed under physician supervision. Clinical staff such as a respiratory therapist may administer the treatment in that setting.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
12,41194626,,Phy/qhp op pulm rhb w/mntr,A,,0.56,2.64,,0.10,,0.07,3.27,0.73,0,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,41294640,,Airway inhalation treatment,A,,0.00,0.25,,0.25,NA,0.01,0.26,0.26,5,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,41394642,,Aerosol inhalation treatment,C,,0.00,0.00,,0.00,,0.00,0.00,0.00,5,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,41494644,,Cont inhlj tx 1st hour,A,,0.00,1.85,,1.85,NA,0.02,1.87,1.87,5,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,41594645,,Cont inhlj tx each addl hour,A,,0.00,0.49,,0.49,NA,0.01,0.50,0.50,5,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,41694660,,Cpap initiation&mgmt,A,,0.74,1.27,,0.17,,0.06,2.07,0.97,0,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,41794664,,Demo&/eval pt use inhaler,A,,0.00,0.58,,0.58,NA,0.02,0.60,0.60,5,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,02,0,99,0.00,0.00,0.00