--- title: "ASC Site-of-Service Shift, Definition | MedTech Terms" description: "Migration of procedures from hospitals to ambulatory surgery centers. Plain-English Reimbursement definition for MedTech teams, with examples and related terms." lang: en json-ld: | { "@context": "https://schema.org", "@graph": [ { "@type": "DefinedTerm", "@id": "https://medtechterms.com/terms/asc-shift#term", "name": "ASC Site-of-Service Shift", "description": "Many procedures historically performed inpatient have shifted to ambulatory surgery centers (ASCs) as CMS expanded the ASC-payable procedure list and as physician-owned ASC economics drove adoption - most visibly in orthopedics (total joints) and cardiology.", "url": "https://medtechterms.com/terms/asc-shift", "termCode": "asc-shift", "inDefinedTermSet": { "@type": "DefinedTermSet", "name": "MedTech Terms", "url": "https://medtechterms.com/terms" } }, { "@type": "Article", "@id": "https://medtechterms.com/terms/asc-shift#article", "headline": "ASC Site-of-Service Shift", "description": "Migration of procedures from hospitals to ambulatory surgery centers.", "url": "https://medtechterms.com/terms/asc-shift", "mainEntityOfPage": { "@type": "WebPage", "@id": "https://medtechterms.com/terms/asc-shift" }, "about": { "@id": "https://medtechterms.com/terms/asc-shift#term" }, "articleSection": "Reimbursement", "inLanguage": "en", "keywords": "ASC Site-of-Service Shift, Reimbursement, medical device, MedTech", "author": { "@type": "Person", "name": "Christian Espinosa", "jobTitle": "Founder, Blue Goat Cyber", "url": "https://bluegoatcyber.com" }, "publisher": { "@type": "Organization", "name": "MedTech Terms", "url": "https://medtechterms.com" }, "isPartOf": { "@type": "WebSite", "name": "MedTech Terms", "url": "https://medtechterms.com" }, "datePublished": "2026-05-05", "dateModified": "2026-05-05", "citation": [ { "@type": "CreativeWork", "name": "CMS ASC payment", "url": "https://www.cms.gov/medicare/payment/prospective-payment-systems/ambulatory-surgical-center-asc", "publisher": { "@type": "Organization", "name": "CMS" } }, { "@type": "CreativeWork", "name": "AMA CPT Resources", "url": "https://www.ama-assn.org/practice-management/cpt", "publisher": { "@type": "Organization", "name": "AMA" } }, { "@type": "CreativeWork", "name": "AdvaMed - Payment & Coverage", "url": "https://www.advamed.org/our-work/", "publisher": { "@type": "Organization", "name": "AdvaMed" } } ], "mentions": [ { "@type": "DefinedTerm", "@id": "https://medtechterms.com/terms/opps#term", "name": "Outpatient Prospective Payment System", "alternateName": "OPPS", "url": "https://medtechterms.com/terms/opps" }, { "@type": "DefinedTerm", "@id": "https://medtechterms.com/terms/tpt#term", "name": "Transitional Pass-Through Payment", "alternateName": "TPT", "url": "https://medtechterms.com/terms/tpt" } ] }, { "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://medtechterms.com/" }, { "@type": "ListItem", "position": 2, "name": "Terms", "item": "https://medtechterms.com/terms" }, { "@type": "ListItem", "position": 3, "name": "Reimbursement", "item": "https://medtechterms.com/terms?cat=Reimbursement" }, { "@type": "ListItem", "position": 4, "name": "ASC Site-of-Service Shift", "item": "https://medtechterms.com/terms/asc-shift" } ] }, { "@type": "FAQPage", "@id": "https://medtechterms.com/terms/asc-shift#faq", "mainEntity": [ { "@type": "Question", "name": "How does ASC site-of-service shift affect medical device approvals?", "acceptedAnswer": { "@type": "Answer", "text": "The site-of-service shift itself does not directly alter the regulatory approval process for medical devices. Device approvals are based on safety and effectiveness data, independent of where the procedure is performed. However, manufacturers may need to provide data relevant to ASCs if the device has specific operational considerations in that setting." } }, { "@type": "Question", "name": "Are there specific quality system requirements for devices used in ASCs?", "acceptedAnswer": { "@type": "Answer", "text": "No, the fundamental quality system requirements for medical devices, as outlined in regulations like 21 CFR Part 820 in the United States, apply irrespective of the site of service. Manufacturers must ensure their quality management system addresses the design, production, and post-market surveillance of devices used in any approved clinical environment, including ASCs." } }, { "@type": "Question", "name": "What is the role of human factors engineering in ASC site-of-service shifts?", "acceptedAnswer": { "@type": "Answer", "text": "Human factors engineering is crucial to ensure devices are safe and effective for use in ASCs. Manufacturers should consider the environment, user profiles, and potential use errors specific to ASC settings during device design and validation, per IEC 62366-1:2015, Application of usability engineering to medical devices." } } ] } ] } --- [ MedTech Terms The authoritative reference ](/) Browse Learn [Latest](/latest) About 1. [Home](/) 2. / 3. [Terms](/terms) 4. / 5. [Reimbursement](/terms?cat=Reimbursement) 6. / 7. ASC Site-of-Service Shift [All terms](/terms) Reimbursement [Hospital Buyer & Reimbursement](/ecosystems/hospital-buyer) # ASC Site-of-Service Shift Migration of procedures from hospitals to ambulatory surgery centers. Reviewed by [Christian Espinosa, Founder, Blue Goat Cyber](/authors/christian-espinosa) Last reviewed May 5, 2026 ## Definition Many procedures historically performed inpatient have shifted to ambulatory surgery centers (ASCs) as CMS expanded the ASC-payable procedure list and as physician-owned ASC economics drove adoption - most visibly in orthopedics (total joints) and cardiology. What the regulation says While regulations primarily focus on the safety and effectiveness of medical devices and procedures, the shift to ASCs is influenced by reimbursement policies set by entities such as the Centers for Medicare & Medicaid Services (CMS). These policies, which determine payment rates for procedures performed in different settings, indirectly impact device manufacturers by driving where procedures are performed. Manufacturers must ensure their devices meet all applicable regulatory requirements regardless of the clinical setting, according to regulations like 21 CFR Part 820 for quality systems, even as the site of service changes. ## What this means in practice Site-of-service shift compresses device pricing power: ASC payments are typically 60% of HOPD rates. Capital, capital-equipment, and disposables strategies must adapt to ASC budgets. ## Examples - A medical device manufacturer designs a new surgical robot for orthopedic procedures, ensuring its footprint and operational requirements are compatible with the typically smaller operating rooms found in ASCs. - A company developing an ocular implant for cataract surgery provides training and technical support tailored to the specific needs and workflows of ASC staff, acknowledging the high volume of these procedures performed in an outpatient setting. - A device manufacturer conducts post-market surveillance specifically tracking adverse events and device performance in ASC settings to identify any unique challenges or use errors associated with that environment, fulfilling requirements under 21 CFR Part 803 for medical device reporting. Common pitfalls - • Assuming that regulatory requirements for devices change based on the site of service, rather than remaining consistent across all approved clinical settings. - • Failing to consider the impact of reimbursement policies on product development and market access strategies. - • Overlooking the need for a quality management system that supports devices used in various healthcare settings, including ASCs. ## Frequently asked questions How does ASC site-of-service shift affect medical device approvals? The site-of-service shift itself does not directly alter the regulatory approval process for medical devices. Device approvals are based on safety and effectiveness data, independent of where the procedure is performed. However, manufacturers may need to provide data relevant to ASCs if the device has specific operational considerations in that setting. Are there specific quality system requirements for devices used in ASCs? What is the role of human factors engineering in ASC site-of-service shifts? ## Related terms Grouped by theme ### Editor's picks · Hand-selected related concepts [ Reimbursement Outpatient Prospective Payment System(OPPS) Medicare's payment system for hospital outpatient services. ](/terms/opps)[ Reimbursement Transitional Pass-Through Payment(TPT) Supplemental outpatient payment for new device technologies. ](/terms/tpt) ### More in Reimbursement · Same category [ Reimbursement 340B Drug Pricing Program(340B) Federal program providing discounted drugs to safety-net providers. ](/terms/340b)[ Reimbursement Ambulatory Payment Classification(APC) The Medicare grouping system that determines hospital outpatient payment amounts under OPPS, analogous to MS-DRGs for inpatient. ](/terms/apc)[ Reimbursement Budget Impact Model(BIM) Financial model that estimates the total cost consequences of adopting a new technology to a payer's budget over a defined horizon. ](/terms/budget-impact-model)[ Reimbursement Bundled Payment Single payment that covers all services for an episode of care. ](/terms/bundled-payment) Cited by Where this term appears across MedTech Terms. Ecosystems (1) - [Hospital Buyer & Reimbursement](/ecosystems/hospital-buyer) ## Primary references 3 sources Link health: 3 verified · last checked 2026-06-20 CMS· 1 AMA· 1 AdvaMed· 1 1. [1 CMS ASC payment Verified CMS · cms.gov ](https://www.cms.gov/medicare/payment/prospective-payment-systems/ambulatory-surgical-center-asc) 2. [2 AMA CPT Resources Verified AMA · ama-assn.org ](https://www.ama-assn.org/practice-management/cpt) 3. [3 AdvaMed - Payment & Coverage Verified AdvaMed · advamed.org ](https://www.advamed.org/our-work/) Inline markers like \[1\] jump to the matching reference above. Sponsor note ### Need cybersecurity expertise on a connected-device launch? Blue Goat Cyber helps MedTech teams ship connected products that hospital security teams will actually procure. [Book a 30-minute discovery session](https://go.bluegoatcyber.com/meetings/blue-goat-cyber/discovery-session) - No obligation - Expert-led from minute one - NDA available on request MedTech Terms is a community resource sponsored by [Blue Goat Cyber](https://bluegoatcyber.com). Definitions are independent of any vendor. On this term Category Reimbursement Sources 3 Updated 5/5/2026 [Compare with another term](/compare?a=asc-shift) Learn in 60 seconds Card Lesson Quiz Migration of procedures from hospitals to ambulatory surgery centers. - · Site-of-service shift compresses device pricing power: ASC payments are typically 60% of HOPD rates. - · Capital, capital-equipment, and disposables strategies must adapt to ASC budgets. Remember this Watch out: Assuming that regulatory requirements for devices change based on the site of service, rather than remaining consistent across all approved clinical settings. Related terms - [Outpatient Prospective Payment System(OPPS) ](/terms/opps) - [Transitional Pass-Through Payment(TPT) ](/terms/tpt) You may also need Auto-suggested from Reimbursement and shared keywords. - [Ambulatory Payment Classification(APC) ](/terms/apc) - [ICD-10-CM / ICD-10-PCS ](/terms/icd-10) - [HITECH Act(HITECH) ](/terms/hitech-act) - [Budget Impact Model(BIM) ](/terms/budget-impact-model) - [Inpatient Prospective Payment System(IPPS) ](/terms/ipps) - [MS-DRG(MS-DRG) ](/terms/ms-drg) [All Reimbursement terms](/terms?cat=Reimbursement) MedTech Terms An authoritative, plain-language reference for the regulatory, quality, cybersecurity, and software terms that shape modern medical devices. 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