No. J9165 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 J9165?

One unit of J9165 is 250 mg, as stated in the code's descriptor. Units to report = dose given ÷ 250 mg.

J9165 (Retired 2025) — Diethylstilbestrol injection

J9165 was retired on Dec 31, 2025

CMS ended J9165 after Dec 31, 2025. Don’t report it for later dates of service. Look up the drug for its current code.

Look up diethylstilbestrol diphosphate

Code

CMS HCPCS file

HCPCS codeJ9165

Billing unit250 mg

Descriptor: Injection, diethylstilbestrol diphosphate, 250 mg
Short descriptor: Diethylstilbestrol injection
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 J9165 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 diethylstilbestrol diphosphate

J9165: common questions

Is J9165 a CPT code?: No. J9165 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 J9165?: One unit of J9165 is 250 mg, as stated in the code's descriptor. Units to report = dose given ÷ 250 mg. J-code billing units.

J9165 — Injection, diethylstilbestrol diphosphate, 250 mg

Code

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J9165: common questions

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