HCPCS code J9144: Injection, daratumumab and hyaluronidase-fihj, 10 mg

Learn more about HCPCS code J9144, its documentation requirements, and the billing guidelines you need to follow for proper use and billing from our short guide.

Use Code

Frequently asked questions

Yes. J9144 is generally covered when the use of daratumumab and hyaluronidase-fihj (Darzalex Faspro®) is considered medically necessary, either for FDA-approved indications (multiple myeloma, AL amyloidosis) or for off-label uses supported by compendia recognized by Medicare.

Because 1 unit of J9144 equals 10 mg, billing must be in whole units only. A 75.5 mg dose should be billed as 8 units (80 mg), with documentation in the medical record of the actual dose administered.

Bill the amount administered with J9144. If a portion of a single-use vial is discarded, report the discarded amount on a separate line with the JW modifier. If no drug was wasted, report the JZ modifier.