J0841 — Injection, crotalidae immune f(ab')2 (equine), 120 mg
J0841 is a HCPCS Level II code for injection, crotalidae immune f(ab')2 (equine), 120 mg. It belongs to the Drugs Administered Other Than Oral Method section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
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 J0841 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
- 20 units MAI 3 — Date of Service Edit: Clinical · Prescribing Information
- outpatient
- 24 units MAI 3 — Date of Service Edit: Clinical · Clinical: Society Comment
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 J0841
- Long descriptor
- Injection, crotalidae immune f(ab')2 (equine), 120 mg
- Short descriptor
- Inj crotalidae im f(ab')2 eq
- Added
- January 1, 2019
- 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 J0841
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If J0841 is not quite right, the correct code is very often within a few positions of it.
- J0795Injection, corticorelin ovine triflutate, 1 microgramterminated
- J0799Fda approved prescription drug, only for use as hiv pre-exposure prophylaxis (not for use as treatment of hiv), not otherwise classified
- J0800Injection, corticotropin, up to 40 unitsterminated
- J0801Injection, corticotropin (acthar gel), up to 40 units
- J0802Injection, corticotropin (ani), up to 40 units
- J0833Injection, cosyntropin, not otherwise specified, 0.25 mgterminated
- J0834Injection, cosyntropin, 0.25 mg
- J0840Injection, crotalidae polyvalent immune fab (ovine), up to 1 gram
- J0850Injection, cytomegalovirus immune globulin intravenous (human), per vial
- J0870Injection, imetelstat, 1 mg
- J0872Injection, daptomycin (xellia), unrefrigerated, not therapeutically equivalent to j0878 or j0873, 1 mg
- J0873Injection, daptomycin (xellia), not therapeutically equivalent to j0878 or j0872, 1 mg
- J0874Injection, daptomycin (baxter), not therapeutically equivalent to j0878, 1 mg
- J0875Injection, dalbavancin, 5 mg
- J0877Injection, daptomycin (hospira), not therapeutically equivalent to j0878, 1 mg
- J0878Injection, daptomycin, 1 mg
Questions about J0841
What is HCPCS code J0841?
J0841 is a HCPCS Level II code for injection, crotalidae immune f(ab')2 (equine), 120 mg. It sits in the Drugs Administered Other Than Oral Method section.
Does Medicare cover J0841?
The CMS HCPCS file marks J0841 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is J0841 paid under the physician fee schedule?
J0841 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).