No. J3371 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.

What is one billing unit of J3371?

One unit of J3371 is 500 mg, as stated in the code's descriptor. Units to report = dose given ÷ 500 mg.

J3371 (Retired 2025) — Inj, vancomycin hcl (mylan)

J3371 was retired on Jun 30, 2025

CMS ended J3371 after Jun 30, 2025. Don’t report it for later dates of service. Current codes for the same drug:

Code

CMS HCPCS file

HCPCS codeJ3371

Billing unit500 mg

Descriptor: Injection, vancomycin hcl (mylan), not therapeutically equivalent to j3370, 500 mg
Short descriptor: Inj, vancomycin hcl (mylan)
Code set: HCPCS Level II, maintained by CMS
Effective: Jul 1, 2025

The billing unit is read from the descriptor. Confirm it against the CMS file before billing.

Find the NDC

Med-Code hasn’t mapped J3371 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.

Search NDCs for vancomycin hcl

J3371: common questions

Is J3371 a CPT code?: No. J3371 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 J3371?: One unit of J3371 is 500 mg, as stated in the code's descriptor. Units to report = dose given ÷ 500 mg. J-code billing units.

J3371 — Injection, vancomycin hcl (mylan), not therapeutically equivalent to j3370, 500 mg

Code

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J3371: common questions

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