HCPCS Level II drug code
J1200 — Injection, diphenhydramine hcl, up to 50 mg
In short
J1200 is the HCPCS Level II code for injection, diphenhydramine hcl, up to 50 mg. CMS assigns NDCs for Diphenhydramine HCl to it. The Medicare Part B payment limit is $0.855 per unit (October 1, 2026 through December 31, 2026).
Code
CMS HCPCS file- Descriptor
- Injection, diphenhydramine hcl, up to 50 mg
- Short descriptor
- Diphenhydramine hcl injectio
- Code set
- HCPCS Level II, maintained by CMS
- Effective
- Jan 1, 1997
Medicare Part B payment limit
CMS ASP fileEffective October 1, 2026 through December 31, 2026. Payment allowance limits subject to the ASP methodology are based on 2Q26 ASP data. A payment limit is not a coverage decision; the Medicare contractor decides coverage. CMS ASP pricing files
Units and claim line
Enter the dose to get the units and the NDC line for the CMS-1500 and the 837P.
Enter the units to build the claim line.
NDCs billed under J1200
CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 18 NDCs to J1200 for Diphenhydramine HCl. Billing units per package are CMS’s figures for this code’s unit.
| Drug | NDC (11-digit) | Labeler | Package | Billing units per package |
|---|---|---|---|---|
| Diphenhydramine Hcl | 00641-0376-25 | Hikma Pharmaceuticals USA Inc. | 25 × 1 | 25 |
| Diphenhydramine Hcl | 63323-0664-01 | FreseniUS Kabi USA, LLC | 25 × 1 | 25 |
| Diphenhydramine Hcl | 63323-0664-16 | FreseniUS Kabi USA, LLC | 25 × 1 | 25 |
| Diphenhydramine Hcl | 72485-0101-25 | Armas Pharmaceuticals Inc. | 25 × 1 | 25 |
| Diphenhydramine Hcl | 76045-0102-10 | FreseniUS Kabi USA, LLC | 24 × 1 | 24 |
| Diphenhydramine HCl | 00404-9851-01 | Henry Schein Inc. | 1 | 1 |
| Diphenhydramine HCl | 00641-6282-25 | Hikma Pharmaceuticals USA Inc. | 25 × 1 | 25 |
| Diphenhydramine HCl | 23155-0263-31 | Heritage Pharmaceuticals Inc. | 10 | 10 |
| Diphenhydramine HCl | 23155-0264-41 | Heritage Pharmaceuticals Inc. | 25 × 1 | 25 |
| Diphenhydramine HCl | 25021-0481-01 | Sagent Pharmaceuticals | 25 × 1 | 25 |
| Diphenhydramine HCl | 42571-0337-87 | Micro Labs Limited | 25 × 1 | 25 |
| Diphenhydramine HCl | 42571-0511-56 | Micro Labs Limited | 10 | 10 |
| Diphenhydramine HCl | 50090-0878-00 | A-S Medication Solutions | 1 | 1 |
| Diphenhydramine HCl | 50090-1841-00 | A-S Medication Solutions | 25 × 1 | 25 |
| Diphenhydramine HCl | 51662-1219-01 | HF Acquisition Co. LLC, DBA HealthFirst | 1 | 1 |
| Diphenhydramine HCl | 51662-1219-03 | HF Acquisition Co. LLC, DBA HealthFirst | 25 × 1 | 25 |
| Diphenhydramine HCl | 72485-0101-05 | Armas Pharmaceuticals Inc. | 5 × 1 | 5 |
| Diphenhydramine HCl | 83634-0781-01 | Avenacy Inc. | 25 × 1 | 25 |
J1200: common questions
- Is J1200 a CPT code?
- No. J1200 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 NDCs are billed under J1200?
- CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 18 NDCs under J1200, for Diphenhydramine HCl. The table on this page shows each one with its billing units per package.
- What is the Medicare payment limit for J1200?
- $0.855 per 50 mg, effective October 1, 2026 through December 31, 2026, from CMS's Part B drug payment limit file. Multiply by the units billed for the allowed amount before deductible and coinsurance. It is not a coverage decision.