C9399 is a temporary HCPCS code that is used by medical coders to report drugs, biologicals, and radiopharmaceuticals that do not have a permanent HCPCS code assigned to them. This code is typically used when a new drug or medical technology is approved by the FDA and has not yet been assigned a permanent code.
Medical coders use the C9399 code when they need to bill for a product or service that does not have a specific code assigned to it. When submitting claims to insurance companies or government programs, such as Medicare or Medicaid, using the C9399 code allows providers to receive payment for the product or service.
It is important to note that the C9399 code is a temporary code and will be replaced by a permanent code when one is assigned. In the meantime, medical coders should use this code only when appropriate and follow any guidelines or instructions from their employer, the payer, or regulatory bodies such as CMS.