HCPCS J1931
Laronidase injection
Last reviewed August 2026 · DataLily AI data team
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HCPCS J1931 at a glance
- Code
- J1931
- Code type
- CPT/HCPCS
- Short descriptor
- Laronidase injection
- Category
- ASC Ancillary
- ASC eligibility
- ASC-eligible (ancillary)
- Typical setting
- Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
- Medicare ASC rate
- $39.95 national · 2026Q2
What is HCPCS code J1931?
HCPCS J1931 is a CPT/HCPCS procedure code for laronidase injection. Its official short descriptor is "Laronidase injection". In the ASC context it is grouped under ASC Ancillary.
Is HCPCS J1931 eligible in an ambulatory surgery center (ASC)?
HCPCS J1931 is an ancillary service that can be provided in the ASC setting when it supports a surgical procedure.
Where is HCPCS J1931 typically performed?
Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
What is the Medicare ASC payment rate for HCPCS J1931?
The national Medicare ASC payment rate for HCPCS J1931 is $39.95 (Medicare ASC Payment System, 2026Q2). This is the national, unadjusted Medicare amount; the amount an individual ambulatory surgery center is paid is adjusted for local wage index and may differ. It reflects Medicare's facility payment only and does not include the surgeon's professional fee.
Reference information about ASC eligibility and typical procedure setting. Codes, descriptors, and ASC-eligibility status change over time. This is a coding reference, not billing, coding, or legal advice. Always verify against current guidance and individual payer policy before scheduling or billing. CPT is a registered trademark of the American Medical Association. Read the DataLily AI data methodology.