Guides Infusion suites
Service-line guide
Ambulatory infusion suites and infusion centers
Infusion outside the hospital and outside the home: a physician or nurse practitioner practice that infuses in its own chairs, or a suite run by a home infusion pharmacy. Medicare has no facility type called an infusion center, so how each model is licensed and paid depends on who owns it, who supervises and which state it is in.
Educational summary, last reviewed October 17, 2026. Not legal advice — confirm with the state licensing agency or counsel.
Last reviewed October 17, 2026. 41 findings: 25 provisional, 16 verified. 3 time-sensitive, flagged with a recheck date. How findings are sourced and labelled.
1What it is
Two models: center and suite
ProvisionalAn ambulatory infusion center (AIC) is a physician- or NP-led clinic that bills under the provider’s NPI with place of service 11, using drug and CPT administration codes rather than per diems. An ambulatory infusion suite (AIS) is owned and operated by a home infusion pharmacy, with RNs and pharmacists providing care under physician orders; suites are used to start therapy, teach self-administration and serve patients who prefer an office setting.
Not yet confirmed — check with CMS or your Medicare Administrative Contractor.
Source: NHIA: Infusion suites (association)ACHC: Navigating accreditation for infusion services
No Medicare “infusion center” type
ProvisionalMedicare has no facility or provider type called an infusion center. Each model bills under the rules of what it legally is: a physician practice, a hospital department or a pharmacy.
Not yet confirmed — check with CMS.
In practice: No CMS manual was found stating this directly; it rests on industry sources and on the absence of such a type in 42 CFR 410.26 and 413.65.
Source: NHIA: Infusion suites (association)Prochant: Types of infusion delivery models (secondary)42 CFR 410.2642 CFR 413.65
A hospital-owned infusion center bills the hospital outpatient system only as a provider-based department of the hospital, which requires meeting 42 CFR 413.65. Otherwise it is treated as freestanding.
Source: 42 CFR 413.65
How common suites are
ProvisionalAn NHIF trends report (2020) found that 71% of infusion pharmacy locations had a suite, ranging from 1 to 20 chairs and averaging 3.4.
Not yet confirmed — check with NHIA.
2Who regulates it
No single national regulator covers infusion centers. Expectations come from Medicare supervision and payment rules, state facility, pharmacy and nursing law, and voluntary accreditation.
No national regulator
ProvisionalThere is no single national regulatory body over all infusion centers; this is consistent with the absence of an infusion center category in the Code of Federal Regulations.
Not yet confirmed — check with CMS or the state health department.
Source: Rx Toolkit: Infusion center accreditation (secondary)
States license, if at all
VerifiedLicensure is state-specific and often absent. Kentucky licenses ambulatory infusion centers; most other states’ positions rest on secondary sources. See the infusion licensing map.
USP chapters are enforced by others
ProvisionalUSP <797> and <800> are enforced by state boards of pharmacy and by accreditors, not by USP. ACHC builds both chapters into its pharmacy and hazardous drug handling accreditation.
Not yet confirmed — check with your state board of pharmacy.
Source: ACHC: Navigating accreditation for infusion services
ACHC accreditation: non-deemed
ProvisionalACHC’s Ambulatory Infusion Center accreditation “covers both AIC and AIS services,” with pharmacy and nursing as separate service lines. It is a non-deemed program: there is no Medicare certification behind it. See Accreditation & Surveys.
Not yet confirmed — check with ACHC.
Source: ACHC: Navigating accreditation for infusion services
NICA standards
ProvisionalNICA, an ANSI-accredited standards developer, publishes the Standards of Excellence for Ambulatory Infusion Centers, described as the first American National Standards for these centers, and runs an accreditation program. Its survey cycle, fees and the content of the standards were not confirmed.
Not yet confirmed — check with NICA.
Source: NICA: Standards of Excellence for Ambulatory Infusion CentersRx Toolkit: Infusion center accreditation (secondary)
The Joint Commission
ProvisionalThe Joint Commission offers a general Ambulatory Health Care accreditation program; no infusion-center-specific standards set was found.
Not yet confirmed — check with The Joint Commission.
Source: The Joint Commission: Ambulatory health care accreditation
3Federal rules
Services billed “incident to” a physician “must be furnished under the direct supervision of the physician (or other practitioner)” (42 CFR 410.26(b)(5)). Designated care management and behavioral health services may be furnished under general supervision; infusion is not among those exceptions.
Source: 42 CFR 410.26
As currently codified, 42 CFR 410.26(a)(2) says direct supervision “may include virtual presence through audio/video real-time communications technology (excluding audio-only)” for services that do not have a 010 or 090 global surgery indicator. Audio-only contact does not count. The section’s amendment history includes 90 FR 50007 (November 5, 2025) and 91 FR 12079 (March 12, 2026).
Time-sensitive. Supervision rules change with each annual Physician Fee Schedule rule; recheck 42 CFR 410.26 when the CY 2027 final rule is published (before January 1, 2027).
Source: 42 CFR 410.26
Secondary summaries say the CY 2026 Physician Fee Schedule final rule (released October 31, 2025) made the audio-video definition permanent for services other than 010 and 090 global surgery services. Whether the rule’s preamble addresses drug administration codes specifically was not confirmed; applying it to infusion follows from the codified text, not from a reading of the rule.
Not yet confirmed — check with CMS or your Medicare Administrative Contractor.
Source: Forvis Mazars: CY 2026 Physician Fee Schedule (secondary)ABA Health Law: CY 2026 PFS final rule (secondary)42 CFR 410.26
Provider-based status
VerifiedEvery provider-based site must share the main provider’s license unless state law requires otherwise, and be clinically and financially integrated and publicly identified as part of it (42 CFR 413.65(d)). An off-campus site also needs 100% ownership and control, administration and supervision by the main provider, and a location within 35 miles of the main campus or an alternative test (413.65(e)).
Source: 42 CFR 413.65
An off-campus facility furnishing physician-office-type services is presumed freestanding unless CMS determines otherwise (42 CFR 413.65(b)(4)).
Source: 42 CFR 413.65
Hospital outpatient obligations
VerifiedProvider-based departments carry the antidumping (EMTALA) obligations of 42 CFR 489.24, and off-campus departments must give the beneficiary written notice of potential coinsurance liability (42 CFR 413.65(g)(7)).
Source: 42 CFR 413.65
Mixing at the chair: immediate use
ProvisionalUSP <797> (2023) allows preparation outside a cleanroom only as immediate use: no more than 3 different sterile products, administration beginning within 4 hours of when preparation starts, written procedures, trained staff and a label unless the preparer administers or witnesses. The 2023 revision extended the window from 1 hour. Anything beyond that is Category 1, 2 or 3 compounding; hazardous drugs bring in USP <800>.
Not yet confirmed — check with your state board of pharmacy and the USP text.
Source: BCSCP study guide: Immediate-use CSPs (secondary)TechSafety: USP <797> updates (secondary)
4Payment
Drugs in the physician office
VerifiedPart B pays drugs administered by IV infusion incident to a physician service under the ASP methodology, typically 106% of ASP, except compounded drugs. The practice bills on the CMS-1500 with drug administration codes and the drug.
Billing under an NPP’s own number
ProvisionalServices billed under a nurse practitioner’s or physician assistant’s own NPI rather than incident to a physician are generally paid at 85% of the fee schedule.
Not yet confirmed — check with CMS or your Medicare Administrative Contractor.
Under the CY 2026 OPPS final rule, as summarized by secondary sources, drug administration services (any HCPCS code in the drug administration APCs) furnished in excepted off-campus provider-based departments, those grandfathered under section 603 of the Bipartisan Budget Act of 2015, are paid at a Physician Fee Schedule-equivalent rate. Rural sole community hospitals are exempt. CMS cites its authority to control unnecessary increases in volume. The Federal Register text was not read, so the exact rate is not stated here.
Not yet confirmed — check with CMS (the CY 2026 OPPS final rule in the Federal Register).
Time-sensitive. OPPS policy is reset each year; recheck when the CY 2027 OPPS final rule is published (before January 1, 2027).
Source: AAMC: CY 2026 OPPS final rule summary (secondary)Polsinelli: CY 2026 OPPS final rule (secondary)NRHA: CY 2026 OPPS final rule summary (secondary)
Medicare home infusion therapy services are paid only for services “in the individual’s home” (42 CFR 486.505), so infusion suite visits cannot be billed under that benefit. See the Medicare home infusion therapy guide.
Source: 42 CFR 486.505
How a pharmacy suite bills
ProvisionalA pharmacy-run suite typically bills commercial payers with per diem codes under NHIA’s National Coding Standard, which covers Ambulatory Infusion Suite services. For Medicare, the drug may be covered under Part D, but the infusion equipment and supplies are excluded, so suite services depend on commercial payers.
Not yet confirmed — check with NHIA or your payers.
Source: NHIA: Infusion suites (association)NHIA: Commercial coverage for home infusion (association)
Commercial site-of-care programs
ProvisionalCommercial payers increasingly build site-of-care review into prior authorization to move maintenance infusions out of hospital outpatient departments. One national payer’s commercial policy added select maintenance and monotherapy oncology drugs from August 1, 2026; where the hospital setting is not medically necessary, it authorizes 2 hospital administrations once monotherapy begins.
Not yet confirmed — check with each payer’s current policy.
Time-sensitive. Payer site-of-care drug lists change often; recheck the policy before contracting or by February 1, 2027.
Source: UnitedHealthcare: Provider administered drugs, site of care policy (August 1, 2026)UnitedHealthcare: Oncology drugs site of care policy update
Cost of the hospital setting
ProvisionalA peer-reviewed study of 52,760 commercially insured infusions (2022–2023) found hospital outpatient administration associated with about 42% higher outpatient costs than alternative sites, with no reduction in adverse events, admissions or emergency visits.
Not yet confirmed — check with the published study (J Manag Care Spec Pharm, December 2025).
Source: HMP Global: Alternative sites of care study summary (secondary)
5How states differ
Most states appear not to license infusion centers as a distinct facility type, but that is a secondary-source finding. The operating checks are a facility or clinic license, corporate practice and NP scope rules, a drug-purchase permit or pharmacy license, and certificate of need where the center is treated as a clinic.
Kentucky licenses ambulatory infusion centers under 902 KAR 20:450, the ambulatory infusion agency rule, defining one as an outpatient treatment center providing infusion therapy and excluding qualifying off-campus centers owned by Kentucky hospitals. The authority is KRS 216B.042; applications go to the Office of Inspector General with a $500 fee.
Source: 902 KAR 20:450 (Kentucky LRC)902 KAR 20:450 (Cornell LII)902 KAR 20:450 (PDF)
Most states: no facility license
ProvisionalA secondary source states that the majority of states do not require facility licensure to operate an AIC, naming Kentucky and South Carolina as licensing states. No South Carolina regulation was found.
Not yet confirmed — check with the state health department.
Source: Infusion-center software vendor: operating an AIC across state lines (secondary)
In New York, free-standing clinics (diagnostic and treatment centers) are licensed under Public Health Law Article 28 and 10 NYCRR Part 405, and providers that do not operate as private practices may be licensed as one. Certification requires certificate of need review of public need, character and competence, and financial feasibility.
In practice: How this applies to infusion centers, including the physician-practice exemption, rests on a secondary source.
Source: NYSDOH: Hospitals and diagnostic and treatment centersNYC Business: D&TC clinic operating certificate
Florida: a drug permit for clinics
ProvisionalA 2009 Florida DOH declaratory statement says a business entity operating a health care clinic needs a Health Care Clinic Establishment permit to buy prescription drugs for use there; a licensed practitioner buying under their own license is exempt. Whether the permit still sits in §499.01 was not confirmed.
Not yet confirmed — check with the Florida Department of Health.
Source: Florida Department of Health declaratory statement (2009); no longer published online, cited by title onlyFla. Stat. §499.01 (2024)
Massachusetts: clinic license unless exempt
ProvisionalIn Massachusetts, providers of ambulatory care must be licensed as a clinic or hospital satellite unless exempt under M.G.L. c.111 §52. How this applies to infusion centers was not confirmed.
Not yet confirmed — check with the Massachusetts Department of Public Health.
Source: Mass.gov: Health care facility licensure regulations
Surgical center licenses do not fit
ProvisionalAmbulatory surgical center licenses, such as Illinois’s and Indiana’s, cover surgical centers; no evidence was found that they capture infusion-only centers.
Not yet confirmed — check with the state health department.
Source: Illinois Ambulatory Surgical Treatment Center Act (210 ILCS 5)Indiana DOH: ASC licensing and certification program
6How to start
1. Choose the model
ProvisionalThe model decides the Medicare route. A practice-based center infuses incident to an enrolled supervising practitioner; a pharmacy-run suite has no Medicare route for suite services and relies on commercial payers.
Not yet confirmed — check with CMS or your Medicare Administrative Contractor.
2. Clear the state
VerifiedConfirm any facility or clinic license (for example Kentucky’s 902 KAR 20:450 or New York’s Article 28), corporate practice and NP scope rules, and certificate of need where it applies.
Source: 902 KAR 20:450 (Kentucky LRC)NYSDOH: Hospitals and diagnostic and treatment centers
3. Drug authority and preparation
ProvisionalObtain any state drug-purchase permit or pharmacy license, and set up preparation that stays within USP <797> immediate use or moves to compounding facilities; hazardous drugs add USP <800>.
Not yet confirmed — check with your state board of pharmacy.
Source: Florida Department of Health declaratory statement (2009); no longer published online, cited by title onlyBCSCP study guide: Immediate-use CSPs (secondary)
4. Supervision and staffing
VerifiedStaff RNs under a supervising physician or other practitioner who meets direct supervision under 42 CFR 410.26. Virtual presence counts only as the regulation defines it: real-time audio and video, never audio-only, and only for services without a 010 or 090 global surgery indicator.
Source: 42 CFR 410.26
5. Enroll and contract
ProvisionalA practice-based center enrolls with Medicare as a practice group (CMS-855B) and bills on the CMS-1500 at place of service 11; both models contract with commercial payers’ site-of-care networks and run drug and site-of-care prior authorization.
Not yet confirmed — check with your Medicare Administrative Contractor and payers.
Source: NHIA: Infusion suites (association)UnitedHealthcare: Oncology drugs site of care policy update
6. Consider accreditation
ProvisionalAccreditation from NICA or ACHC is voluntary and not required by Medicare for a physician-office center; payers may require it for network participation.
Not yet confirmed — check with your payers.
Source: NICA: Standards of Excellence for Ambulatory Infusion CentersACHC: Navigating accreditation for infusion services
7Common pitfalls
Medicare home infusion therapy services are paid only in the patient’s home (42 CFR 486.505); a visit in a suite is not billable under that benefit.
Source: 42 CFR 486.505
Virtual direct supervision is defined in 42 CFR 410.26(a)(2) for real-time audio-video only, excluding audio-only, and only for services without a 010 or 090 global surgery indicator. It is not a general waiver of the supervising practitioner.
Source: 42 CFR 410.26
An off-campus site that does not meet 42 CFR 413.65, including ownership, integration and the 35-mile test, is not a hospital department, and office-type services there are presumed freestanding.
Source: 42 CFR 413.65
Exceeding immediate use
ProvisionalPreparing more than 3 sterile products, or starting administration more than 4 hours after preparation begins, takes chairside mixing outside the USP <797> immediate-use exception.
Not yet confirmed — check with your state board of pharmacy and the USP text.
Corporate practice and NP scope
ProvisionalWhether a non-physician-owned center can bill under its medical director, or rely on nurse practitioners, depends on state corporate practice of medicine and NP collaboration rules, which differ widely.
Not yet confirmed — check with the state medical and nursing boards.
Source: Infusion-center software vendor: operating an AIC across state lines (secondary)
Official sources
- NHIA: Infusion suites (association)
- ACHC: Navigating accreditation for infusion services
- Prochant: Types of infusion delivery models (secondary)
- 42 CFR 410.26
- 42 CFR 413.65
- Rx Toolkit: Infusion center accreditation (secondary)
- 902 KAR 20:450 (Kentucky LRC)
- 902 KAR 20:450 (PDF)
- NICA: Standards of Excellence for Ambulatory Infusion Centers
- The Joint Commission: Ambulatory health care accreditation
- Forvis Mazars: CY 2026 Physician Fee Schedule (secondary)
- ABA Health Law: CY 2026 PFS final rule (secondary)
- BCSCP study guide: Immediate-use CSPs (secondary)
- TechSafety: USP <797> updates (secondary)
- Noridian JF Part B: Infusion drug billing
- Medical Economics: Incident-to billing (secondary)
- AAMC: CY 2026 OPPS final rule summary (secondary)
- Polsinelli: CY 2026 OPPS final rule (secondary)
- NRHA: CY 2026 OPPS final rule summary (secondary)
- 42 CFR 486.505
- NHIA: Commercial coverage for home infusion (association)
- UnitedHealthcare: Provider administered drugs, site of care policy (August 1, 2026)
- UnitedHealthcare: Oncology drugs site of care policy update
- HMP Global: Alternative sites of care study summary (secondary)
- 902 KAR 20:450 (Cornell LII)
- Infusion-center software vendor: operating an AIC across state lines (secondary)
- NYSDOH: Hospitals and diagnostic and treatment centers
- NYC Business: D&TC clinic operating certificate
- Florida Department of Health declaratory statement (2009); no longer published online, cited by title only
- Fla. Stat. §499.01 (2024)
- Mass.gov: Health care facility licensure regulations
- Illinois Ambulatory Surgical Treatment Center Act (210 ILCS 5)
- Indiana DOH: ASC licensing and certification program
Revision history
| Date | Change |
|---|---|
| 2026-10-17 | First published |
About this guide. Published and maintained by Paloma Health Technologies; Findings are cited to official sources, dated and status-labelled; see the editorial policy. Educational summary, last reviewed October 17, 2026. Not legal advice — confirm with the state licensing agency or counsel.
Questions
Infusion suites: common questions
Can an infusion suite bill the Medicare home infusion therapy benefit?
No. Medicare pays home infusion therapy services only for services in the individual’s home under 42 CFR 486.505, so visits in an infusion suite are not billable under that benefit.
Does infusion in a physician office need direct supervision?
Yes. Incident-to services must be furnished under the direct supervision of the physician or other practitioner under 42 CFR 410.26(b)(5), and infusion is not among the general-supervision exceptions.
Can direct supervision be virtual?
Only as 42 CFR 410.26(a)(2) defines it: virtual presence through real-time audio and video, excluding audio-only, for services that do not have a 010 or 090 global surgery indicator.
Does Kentucky license ambulatory infusion centers?
Yes. Kentucky licenses them under 902 KAR 20:450, the ambulatory infusion agency rule, under the authority of KRS 216B.042. Applications go to the Office of Inspector General with a $500 fee.
When is a hospital-owned infusion center part of the hospital?
Only when it meets the provider-based requirements of 42 CFR 413.65, including licensure, clinical and financial integration and, off campus, ownership, supervision and location tests. An off-campus site furnishing office-type services is presumed freestanding unless CMS determines otherwise.
How are infused drugs paid in a physician office?
Medicare Part B pays drugs given by IV infusion incident to a physician service under the ASP methodology, typically 106% of ASP, except compounded drugs.