HCPCS Level II drug code
J1818 — Injection, pegzilarginase-nbln, 0.05 mg
In short
J1818 is the HCPCS Level II code for injection, pegzilarginase-nbln, 0.05 mg. One billing unit is 0.05 mg.
Code
CMS HCPCS fileHCPCS codeJ1818
Billing unit0.05 mg
- Descriptor
- Injection, pegzilarginase-nbln, 0.05 mg
- Short descriptor
- Inj pegzilarginase-nbln
- Code set
- HCPCS Level II, maintained by CMS
- Effective
- Oct 1, 2026
The billing unit is read from the descriptor. Confirm it against the CMS file before billing.
Units and claim line
Units = dose given ÷ 0.05 mg. For example, 5 mg is 100 units. Enter the dose to get the units and the NDC line for the CMS-1500 and the 837P.
Enter the dose given to build the claim line.
Find the NDC
Med-Code hasn’t mapped J1818 to specific products yet. Search the FDA NDC Directory for the drug named in the descriptor, and check the route and strength match the code.
J1818: common questions
- Is J1818 a CPT code?
- No. J1818 is a HCPCS Level II code, maintained by CMS, that identifies the drug supplied. CPT codes are five-digit numbers from the AMA that describe services. Giving the drug, for example an injection or infusion, is usually reported with a separate CPT administration code. CPT codes for drug administration.
- What is one billing unit of J1818?
- One unit of J1818 is 0.05 mg, as stated in the code's descriptor. Units to report = dose given ÷ 0.05 mg. J-code billing units.