No. J1620 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 J1620?

One unit of J1620 is 100 mcg, as stated in the code's descriptor. Units to report = dose given ÷ 100 mcg.

J1620 (Retired 2025) — Gonadorelin hydroch/ 100 mcg

J1620 was retired on Dec 31, 2025

CMS ended J1620 after Dec 31, 2025. Don’t report it for later dates of service. Look up the drug for its current code.

Look up gonadorelin hydrochloride

Code

CMS HCPCS file

HCPCS codeJ1620

Billing unit100 mcg

Descriptor: Injection, gonadorelin hydrochloride, per 100 mcg
Short descriptor: Gonadorelin hydroch/ 100 mcg
Code set: HCPCS Level II, maintained by CMS
Effective: Jan 1, 2026

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

Find the NDC

Med-Code hasn’t mapped J1620 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 gonadorelin hydrochloride

J1620: common questions

Is J1620 a CPT code?: No. J1620 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 J1620?: One unit of J1620 is 100 mcg, as stated in the code's descriptor. Units to report = dose given ÷ 100 mcg. J-code billing units.

J1620 — Injection, gonadorelin hydrochloride, per 100 mcg

Code

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J1620: common questions

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