S9991 Services provided as part of
Also known as: Phase III clinical trial, clinical trial service Phase III, research study phase III
Services provided as part of Phase III clinical trial research study.
In Plain Language
research study participation; clinical trial
Clinical Context
Services provided as part of Phase III clinical trials for investigational drugs or devices with focus on comparative efficacy and monitoring.
RVU Information
CPT S9991 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 S9991?
CPT S9991 (Services provided as part of) is a S Codes code. Services provided as part of Phase III clinical trial research study.
Is S9991 covered by insurance?
S9991 is a temporary HCPCS code. Coverage varies by payer and may change when permanent codes are assigned. Services provided as part of Phase III clinical trials for investigational drugs or devices with focus on comparative efficacy and monitoring.
When is CPT S9991 used?
Services provided as part of Phase III clinical trials for investigational drugs or devices with focus on comparative efficacy and monitoring.
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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.