Q2004 — Irrigation solution for treatment of bladder calculi, for example renacidin, per 500 ml
Q2004 is a HCPCS Level II code for irrigation solution for treatment of bladder calculi, for example renacidin, per 500 ml. It belongs to the Temporary Codes 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 statusE
Excluded from the physician fee schedule by regulation. Payment, where it exists, comes from another fee schedule (drugs via ASP, supplies via DMEPOS, and so on).
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 Q2004 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
- 1 unit MAI 3 — Date of Service Edit: Clinical · Prescribing Information
- outpatient
- 1 unit MAI 3 — Date of Service Edit: Clinical · Prescribing Information
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 Q2004
- Long descriptor
- Irrigation solution for treatment of bladder calculi, for example renacidin, per 500 ml
- Short descriptor
- Bladder calculi irrig sol
- Added
- July 1, 2000
- BETOS
- O1E
- Pricing indicator
- 51 — Other
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.
Drugs.
Codes adjacent to Q2004
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If Q2004 is not quite right, the correct code is very often within a few positions of it.
- Q0516Pharmacy supplying fee for hiv pre-exposure prophylaxis fda approved prescription oral drug, per 30-daysterminated
- Q0517Pharmacy supplying fee for hiv pre-exposure prophylaxis fda approved prescription oral drug, per 60-daysterminated
- Q0518Pharmacy supplying fee for hiv pre-exposure prophylaxis fda approved prescription oral drug, per 90-daysterminated
- Q0519Pharmacy supplying fee for hiv pre-exposure prophylaxis fda approved prescription injectable drug, per 30-daysterminated
- Q0520Pharmacy supplying fee for hiv pre-exposure prophylaxis fda approved prescription injectable drug, per 60-daysterminated
- Q0521Pharmacy supplying fee for hiv pre-exposure prophylaxis fda approved prescription
- Q1004New technology intraocular lens category 4 as defined in federal register notice
- Q1005New technology intraocular lens category 5 as defined in federal register notice
- Q2009Injection, fosphenytoin, 50 mg phenytoin equivalent
- Q2017Injection, teniposide, 50 mgterminated
- Q2026Injection, radiesse, 0.1 ml
- Q2028Injection, sculptra, 0.5 mg
- Q2034Influenza virus vaccine, split virus, for intramuscular use (agriflu)
- Q2035Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (afluria)
- Q2036Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (flulaval)
- Q2037Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (fluvirin)
Questions about Q2004
What is HCPCS code Q2004?
Q2004 is a HCPCS Level II code for irrigation solution for treatment of bladder calculi, for example renacidin, per 500 ml. It sits in the Temporary Codes section.
Does Medicare cover Q2004?
The CMS HCPCS file marks Q2004 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 Q2004 paid under the physician fee schedule?
Q2004 carries PFS status code E. Excluded from the physician fee schedule by regulation. Payment, where it exists, comes from another fee schedule (drugs via ASP, supplies via DMEPOS, and so on).