G0333 — Pharmacy dispensing fee for inhalation drug(s); initial 30-day supply as a beneficiary
G0333 is a HCPCS Level II code for pharmacy dispensing fee for inhalation drug(s); initial 30-day supply as a beneficiary. It belongs to the Procedures and Professional Services (Temporary) section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Special coverage instructions apply
There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusX
Statutory exclusion. The item or service is not within the statutory definition of 'physician services', so the fee schedule never pays it.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
Medically Unlikely Edits — units per day
The most units of G0333 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- outpatient
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- DME supplier
- 1 unit MAI 2 — Date of Service Edit: Policy · Code Descriptor / CPT Instruction
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute — no documentation overrides it. CMS MUE 2026Q3.
The CMS record for G0333
- Long descriptor
- Pharmacy dispensing fee for inhalation drug(s); initial 30-day supply as a beneficiary
- Short descriptor
- Dispense fee initial 30 day
- Added
- January 1, 2006
- BETOS
- D1E
- Pricing indicator
- 46 — DMEPOS
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Carrier priced — not otherwise classified, individual determination, carrier discretion, or gap-filled amounts.
Codes adjacent to G0333
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If G0333 is not quite right, the correct code is very often within a few positions of it.
- G0320Home health services furnished using synchronous telemedicine rendered via a real-time two-way audio and video telecommunications system
- G0321Home health services furnished using synchronous telemedicine rendered via telephone or other real-time interactive audio-only telecommunications system
- G0322The collection of physiologic data digitally stored and/or transmitted by the patient to the home health agency (i.e., remote patient monitoring)
- G0323Care management services for behavioral health conditions, at least 20 minutes of clinical psychologist, clinical social worker, mental health counselor, or marriage and family therapist time, per calendar month. (these services include the following required elements: initial assessment or follow-up monitoring, including the use of applicable validated rating scales; behavioral health care planning in relation to behavioral/psychiatric health problems, including revision for patients who are not progressing or whose status changes; facilitating and coordinating treatment such as psychotherapy, coordination with and/or referral to physicians and practitioners who are authorized by medicare to prescribe medications and furnish e/m services, counseling and/or psychiatric consultation; and continuity of care with a designated member of the care team)
- G0327Colorectal cancer screening; blood-based biomarker
- G0328Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous
- G0329Electromagnetic therapy, to one or more areas for chronic stage iii and stage iv pressure ulcers, arterial ulcers, diabetic ulcers and venous stasis ulcers not demonstrating measurable signs of healing after 30 days of conventional care as part of a therapy plan of care
- G0330Facility services for dental rehabilitation procedure(s) performed on a patient who requires monitored anesthesia (e.g., general, intravenous sedation (monitored anesthesia care) and use of an operating room
- G0337Hospice evaluation and counseling services, pre-election
- G0339Image-guided robotic linear accelerator-based stereotactic radiosurgery, complete course of therapy in one session or first session of fractionated treatment
- G0340Image-guided robotic linear accelerator-based stereotactic radiosurgery, delivery including collimator changes and custom plugging, fractionated treatment, all lesions, per session, second through fifth sessions, maximum five sessions per course of treatment
- G0341Percutaneous islet cell transplant, includes portal vein catheterization and infusion
- G0342Laparoscopy for islet cell transplant, includes portal vein catheterization and infusion
- G0343Laparotomy for islet cell transplant, includes portal vein catheterization and infusion
- G0364Bone marrow aspiration performed with bone marrow biopsy through the same incision on the same date of serviceterminated
- G0365Vessel mapping of vessels for hemodialysis access (services for preoperative vessel mapping prior to creation of hemodialysis access using an autogenous hemodialysis conduit, including arterial inflow and venous outflow)terminated
Questions about G0333
What is HCPCS code G0333?
G0333 is a HCPCS Level II code for pharmacy dispensing fee for inhalation drug(s); initial 30-day supply as a beneficiary. It sits in the Procedures and Professional Services (Temporary) section.
Does Medicare cover G0333?
The CMS HCPCS file marks G0333 as "Special coverage instructions apply". There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
How is G0333 paid under the physician fee schedule?
G0333 carries PFS status code X. Statutory exclusion. The item or service is not within the statutory definition of 'physician services', so the fee schedule never pays it.