HCPCS J1100 | Description & Billing Guidelines

J1100 represents one unit of 1 mg of dexamethasone sodium phosphate. that works to prevent the release of inflammatory substances into the patient’s body.

What Is J1100?

Dexamethasone sodium phosphate works to prevent the release of inflammatory substances in the body. One unit of J1100 represents 1 mg of dexamethasone sodium phosphate.

Routes of administration include intramuscular, an injection into muscle; intravenous, an injection, or instillation of liquid, through a needle into a vein; subcutaneous, an injection under the skin; and other routes.

What Is Dexamethasone Sodium Phosphate?

Dexamethasone sodium phosphate is a corticosteroid that treats severe inflammation. Typical conditions include rheumatoid arthritis, ulcerative colitis, multiple sclerosis, and allergic disorders.


J1100 is officially described by HCPCS. The description of this code can be found below.

Short Description: “Dexamethasone sodium phos.”

Long Description: “Injection, dexamethasone sodium phosphate, 1 mg.”

Code: O1E

Code Added: January 01, 1982

Last Changed: January 01, 2001

Billing Guidelines

J1100 can only be used for the drug Dexamethasone sodium phosphate and not for the administration of it. Check the payer’s guidelines if you need to report administration separately.

Brand names for J1100 include Decadron Phosphate®.

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