J2323 – Injection, natalizumab, 1 mg
HCPCS Level II code · J codes: Drugs Administered Other Than Oral Method
HCPCS codeJ2323
- Long description
- Injection, natalizumab, 1 mg
- Short description
- Natalizumab injection
- Pricing indicator
51Drugs- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
O1EOther drugs- ASC
- Approved for ambulatory surgical centers
- Added
- January 1, 2008
- Last change
- January 1, 2008 – No change
Frequently asked questions
What is HCPCS code J2323?
J2323 is a HCPCS Level II code for injection, natalizumab, 1 mg.
Does Medicare cover J2323?
The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby J codes
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- J2305 – Injection, nitroglycerin, 5 mg
- J2310 – Injection, naloxone hydrochloride, per 1 mg
- J2311 – Injection, naloxone hydrochloride (zimhi), 1 mg
- J2312 – Injection, naloxone hydrochloride, not otherwise specified, 0.01 mg
- J2313 – Injection, naloxone hydrochloride (zimhi), 0.01 mg
- J2315 – Injection, naltrexone, depot form, 1 mg
- J2320 – Injection, nandrolone decanoate, up to 50 mg
- J2325 – Injection, nesiritide, 0.1 mg
- J2326 – Injection, nusinersen, 0.1 mg
- J2327 – Injection, risankizumab-rzaa, intravenous, 1 mg
- J2329 – Injection, ublituximab-xiiy, 1mg
- J2350 – Injection, ocrelizumab, 1 mg
- J2351 – Injection, ocrelizumab, 1 mg and hyaluronidase-ocsq
- J2353 – Injection, octreotide, depot form for intramuscular injection, 1 mg
- J2354 – Injection, octreotide, non-depot form for subcutaneous or intravenous injection, 25 mcg
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.