S9559 Hit injection interferon diem
Also known as: home interferon infusion, home interferon therapy, home IFN injection
Home infusion therapy administration of interferon or interferon-like agent injection on a per-diem basis.
In Plain Language
home interferon injection; home interferon treatment
Clinical Context
Provides home administration of interferon alpha or beta for hepatitis C, multiple sclerosis, or other conditions requiring interferon therapy.
RVU Information
CPT S9559 does not have a physician work RVU assigned by CMS. This is typical for supply, drug, and equipment codes — reimbursement is based on Average Sales Price (ASP), fee schedules, or payer contracts rather than the RVU system.
Billing & Documentation
S-codes are used by private payers (not Medicare) for services without a standard CPT or HCPCS code. Coverage varies significantly between insurers. Verify payer acceptance before billing and document medical necessity thoroughly.
Specialties
Frequently Asked Questions
What is CPT code S9559?
CPT S9559 (Hit injection interferon diem) is a S Codes code. Home infusion therapy administration of interferon or interferon-like agent injection on a per-diem basis.
Is S9559 covered by insurance?
S9559 is a temporary HCPCS code. Coverage varies by payer and may change when permanent codes are assigned. Provides home administration of interferon alpha or beta for hepatitis C, multiple sclerosis, or other conditions requiring interferon therapy.
When is CPT S9559 used?
Provides home administration of interferon alpha or beta for hepatitis C, multiple sclerosis, or other conditions requiring interferon therapy.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.