Immune Globulin, Not Otherwise Specified

J1599 is defined as Injection, immune globulin, intravenous, non-lyophilized (e.g., liquid), not otherwise specified, 500 mg. It is used for immune globulin products that do not have a more specific code HCPCS code assigned for a specific date of service.

When billing J1599, please remember:

• The drug name must be provided
• The total amount of the drug being billed must be provided
  • If billing for waste, it should be clear how much was administered and how much was waste
• The National Drug Code (NDC) number must be provided
• Waste should be reported with the JW modifier using the appropriate QB values
• The Quantity Billed (QB) is based on 500 mg
  • Example: If billing a 2,000 mg dose for J1599, the QB should be 4 (4 x 500 mg = 2,000 mg).
    The claim should also have 2,000 mg in the comments field or Loop SV101-7.

The drug name, amount being billed, and NDC should be included in the comments field on the claim or Loop SV101-7.

For more information, please see Jurisdiction M Part B - Unclassified or Not Otherwise Classified (NOC) Drug Codes: Rejected if Not Submitted Correctly.

Once an immune globulin product receives a more specific code assignment, it would no longer be appropriate to bill using J1599. Please confirm the effective date of new codes when billing.

More information on payment allowances and methodologies for drugs and biologicals that are not included in the ASP Medicare Part B Drug Pricing File or the Not Otherwise Classified (NOC) Pricing File can be found in IOM Publication 100-04 Chapter 17 Drugs and Biologicals § 20.1.3 Exceptions to the Average Sales Pricing (ASP) Payment Methodology.