No. Q5139 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 Q5139?

One unit of Q5139 is 10 mg, as stated in the code's descriptor. Units to report = dose given ÷ 10 mg.

Q5139 (Retired 2025) — Inj, eculizumab-aeeb, 10 mg

Q5139 was retired on Mar 31, 2025

CMS ended Q5139 after Mar 31, 2025. Don’t report it for later dates of service. Current codes for the same drug:

Code

CMS HCPCS file

HCPCS codeQ5139

Billing unit10 mg

Descriptor: Injection, eculizumab-aeeb (bkemv), biosimilar, 10 mg
Short descriptor: Inj, eculizumab-aeeb, 10 mg
Code set: HCPCS Level II, maintained by CMS
Effective: Apr 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 Q5139 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.

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Q5139: common questions

Is Q5139 a CPT code?: No. Q5139 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 Q5139?: One unit of Q5139 is 10 mg, as stated in the code's descriptor. Units to report = dose given ÷ 10 mg. J-code billing units.

Q5139 — Injection, eculizumab-aeeb (bkemv), biosimilar, 10 mg

Code

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Q5139: common questions

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