Q9979 was retired on Dec 31, 2015

CMS ended Q9979 after Dec 31, 2015. Don’t report it for later dates of service. Current codes for the same drug:

Code

CMS HCPCS file
HCPCS codeQ9979
Billing unit1 mg
Descriptor
Injection, alemtuzumab, 1 mg
Short descriptor
Injection, alemtuzumab
Code set
HCPCS Level II, maintained by CMS
Effective
Jan 1, 2016

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

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Med-Code hasn’t mapped Q9979 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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Q9979: common questions

Is Q9979 a CPT code?
No. Q9979 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 Q9979?
One unit of Q9979 is 1 mg, as stated in the code's descriptor. Units to report = dose given ÷ 1 mg. J-code billing units.

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