J9021 Injection, aspara, rylaze, 0.1 milligrams
Also known as: Rylaze, Asparaginase Rylaze
Asparaginase (Rylaze brand) administered by injection at 0.1 milligrams per dose; an enzyme that depletes asparagine for leukemia treatment.
In Plain Language
Leukemia treatment injection; Enzyme chemotherapy
Clinical Context
Used for acute lymphoblastic leukemia. Enzyme depletes asparagine, an amino acid required by leukemic cells. Rylaze is a newer formulation.
RVU Information
CPT J9021 does not have a physician work RVU assigned by CMS. This is typical for supply, drug, and equipment codes — reimbursement is based on Average Sales Price (ASP), fee schedules, or payer contracts rather than the RVU system.
Billing & Documentation
J-codes represent drugs administered by a healthcare provider (not self-administered). Documentation must include the drug name, dosage, route of administration, and medical necessity. Most payers require the National Drug Code (NDC) on the claim. Bill the appropriate administration code (96365-96379) in addition to the drug code.
Specialties
Frequently Asked Questions
What is CPT code J9021?
CPT J9021 (Injection, aspara, rylaze, 0.1 milligrams) is a J Codes (Drugs) code. Asparaginase (Rylaze brand) administered by injection at 0.1 milligrams per dose; an enzyme that depletes asparagine for leukemia treatment.
How is J9021 administered?
CPT J9021 is administered by a healthcare provider, typically via injection or infusion. Used for acute lymphoblastic leukemia. Enzyme depletes asparagine, an amino acid required by leukemic cells. Rylaze is a newer formulation. It is used by Oncology, Hematology, Pediatric Oncology.
When is CPT J9021 used?
Used for acute lymphoblastic leukemia. Enzyme depletes asparagine, an amino acid required by leukemic cells. Rylaze is a newer formulation.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.