J1837 — Injection, posaconazole, 1 mg
J1837 is a HCPCS Level II code for injection, posaconazole, 1 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
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The CMS record for J1837
- Long descriptor
- Injection, posaconazole, 1 mg
- Short descriptor
- Inj, posaconazole, 1 mg
- Added
- January 1, 2026
- 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 J1837
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If J1837 is not quite right, the correct code is very often within a few positions of it.
- J1817Insulin for administration through dme (i.e., insulin pump) per 50 units
- J1823Injection, inebilizumab-cdon, 1 mg
- J1826Injection, interferon beta-1a, 30 mcg
- J1830Injection, interferon beta-1b, 0.25 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)
- J1833Injection, isavuconazonium, 1 mg
- J1834Injection, isoniazid, 1 mg
- J1835Injection, itraconazole, 50 mg
- J1836Injection, metronidazole, 10 mg
- J1840Injection, kanamycin sulfate, up to 500 mgterminated
- J1850Injection, kanamycin sulfate, up to 75 mgterminated
- J1885Injection, ketorolac tromethamine, per 15 mg
- J1890Injection, cephalothin sodium, up to 1 gramterminated
- J1920Injection, labetalol hydrochloride, 5 mg
- J1921Injection, labetalol hydrochloride (hikma), not therapeutically equivalent to j1920, 5 mg
- J1930Injection, lanreotide, 1 mg
- J1931Injection, laronidase, 0.1 mg
Questions about J1837
What is HCPCS code J1837?
J1837 is a HCPCS Level II code for injection, posaconazole, 1 mg. It sits in the Drugs Administered Other Than Oral Method section.
Does Medicare cover J1837?
The CMS HCPCS file marks J1837 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 J1837 paid under the physician fee schedule?
J1837 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).