NDAC Dialysis Facility Accreditation — Frequently Asked Questions

What is NDAC (National Dialysis Accreditation Commission)?

NDAC is a CMS-approved accrediting organization (AO) specifically for ESRD dialysis facilities. Established in 2018 and granted initial CMS approval effective January 4, 2019, NDAC awards deemed status to dialysis facilities under 42 CFR Part 494 — the CMS Conditions for Coverage for ESRD. Deemed status means a facility is certified to bill Medicare without a separate state agency survey. NDAC's current CMS approval runs through January 4, 2029 (Federal Register 2022-21415).

Is NDAC the only CMS-approved accreditor for dialysis facilities?

No. Two CMS-approved accrediting organizations hold ESRD deemed status: NDAC and ACHC (Accreditation Commission for Health Care). Both can grant a dialysis facility Medicare certification. NDAC is exclusively focused on dialysis; ACHC is a multi-sector generalist AO that also serves home health, hospice, pharmacy, and other healthcare providers. The choice between them involves tradeoffs in survey style, timeline, state recognition, and organizational fit. IHS provides an independent comparison analysis — the first published independent NDAC vs. ACHC framework in the market.

What is ESRD deemed status and why does it matter?

ESRD deemed status is CMS recognition that a dialysis facility meets the federal Conditions for Coverage (42 CFR Part 494), granted on the basis of accreditation by a CMS-approved organization. Deemed status substitutes for the state agency survey — a facility with deemed status does not need a separate state certification to bill Medicare. This matters because state agency surveys face backlogs of 6–12 months in many states, blocking new facilities from generating Medicare revenue for up to a year after opening. NDAC accreditation eliminates that delay through a contractually governed survey timeline.

What are the CMS Conditions for Coverage for ESRD (42 CFR Part 494)?

The CMS Conditions for Coverage for End-Stage Renal Disease (42 CFR Part 494) are the federal minimum standards every Medicare-certified dialysis facility must meet. They cover patient rights, adequacy of dialysis, water quality and dialysate purity, responsibilities of the medical director, nursing services, dietitian services, social work services, infection control, physical environment, emergency preparedness, and quality assessment and performance improvement (QAPI). NDAC's N-tag survey system maps directly to these conditions — each N-tag corresponds to a specific V-tag from 42 CFR Part 494.

What is the N-tag system and how does it relate to CMS V-tags?

NDAC uses an N-tag coding system that maps one-to-one with the CMS V-tags from the ESRD Conditions for Coverage. Each N-tag identifies a specific compliance requirement under 42 CFR Part 494. Survey deficiency reports cite specific N-tags, making every finding directly traceable to a regulatory standard. NDAC also natively incorporates ANSI/AAMI 2014 water and dialysate standards and CMS Conditions of Emergency Preparedness into the N-tag framework. IHS structures all gap assessments and mock surveys using N-tag citations so remediation is mapped to specific regulatory obligations rather than general categories.

Which types of dialysis facilities can pursue NDAC accreditation?

NDAC accredits outpatient dialysis facilities of all ownership and structural types: independent physician-owned centers, mid-tier regional chains (US Renal Care, Dialysis Clinic Inc., Satellite Healthcare), hospital-based outpatient dialysis units, and new de novo facilities. As of Q1 2025, 105 of the 7,556 total US outpatient dialysis centers hold NDAC accreditation — a 1.4% market penetration rate. The approximately 1,500 independent and regional facilities that comprise about 20% of the market are the primary consulting target. DaVita and Fresenius, which together control approximately 80% of US dialysis facilities, typically manage certification through internal compliance infrastructure rather than NDAC. Source: Matthews Real Estate Investment Services, 2025; NDAC Facility Directory, 2026.

Does NDAC accredit home dialysis programs as well as in-center facilities?

Yes. NDAC accredits home hemodialysis (HHD) and peritoneal dialysis (PD) training programs. Adding a home modality to an existing in-center facility triggers a mandatory NDAC service expansion survey — distinct from the initial facility accreditation survey. Home dialysis is the fastest-growing segment of the market: 78,400 patients currently use home dialysis modalities, and CMS policy under the ESRD Treatment Choices model and Bipartisan Budget Act telehealth expansion is actively driving home dialysis growth. IHS develops the specific documentation required for home programs: patient competency checklists, home water testing protocols, and remote monitoring compliance procedures.

Can a new dialysis facility get NDAC accreditation before it has a full patient census?

Yes. New (de novo) dialysis facilities can begin the NDAC preparation process before or during initial operations. Gap assessment and policy development can proceed before the first patient is treated. The Letter of Readiness — the formal declaration of survey readiness — is filed once operations are underway and all systems are in place. This is the mechanism by which de novo facilities bypass state survey backlogs. Many IHS clients begin the engagement during facility construction or immediately after state licensure.

Are DaVita or Fresenius facilities NDAC-accredited?

Neither DaVita nor Fresenius uses NDAC as their primary accreditation pathway. DaVita operates approximately 2,657 domestic centers (37–38% market share) and Fresenius approximately 2,600–2,800 centers (approximately 38% market share) — together comprising about 80% of US dialysis facilities. Both chains maintain internal compliance and quality departments that manage state certification processes. The independent and regional clinic market — approximately 1,500 facilities — is where NDAC accreditation consulting demand is concentrated, as these facilities lack the scale to replicate that internal infrastructure. Source: Matthews Real Estate Investment Services, 2025.

Are there states where NDAC accreditation is mandatory or creates specific regulatory advantages?

Yes. Several states have NDAC-specific regulatory implications:

• North Carolina: CON mandate requires accreditation within one year of initial licensure — no waiver pathway exists. Facilities that miss this deadline face license jeopardy.
• Texas: State allows NDAC accreditation for simultaneous state licensure and Medicare certification in a single survey, eliminating duplicative processes.
• Ohio: Formally recognizes NDAC accreditation in its facility oversight framework.
• Wyoming: Tracks NDAC-accredited facilities in the state directory, providing visibility benefit for independent facilities.

Additionally, facilities in all states with staffing ratio mandates — Georgia, Maryland, Massachusetts, New Jersey, Oregon, South Carolina, Texas, Utah — must track state-level nurse-to-patient ratio compliance in addition to NDAC standards.

What is the NDAC accreditation application process step by step?

The NDAC process proceeds in five phases:

1. Gap Assessment (Months 1–2): IHS audits current facility operations against all applicable N-tags and AAMI 2014 water standards. Output is a risk matrix categorized by severity: Immediate Jeopardy, Condition-level, and Standard-level findings.
2. Policy Development and Remediation (Months 3–4): IHS drafts and revises the complete policy and procedure manual, closing all gaps from Phase 1. Priority areas: infection control, water quality, care planning, emergency preparedness.
3. Mock Survey (Month 5): Simulated 3-day unannounced survey with staff interviews, record audits, water system inspection, and physical plant walkthrough. Mock deficiency report generated in NDAC format.
4. Application and Letter of Readiness (Month 6): Execute NDAC Accreditation Agreement and Business Associate Agreement, pay application fees, submit formal Letter of Readiness to NDAC.
5. Survey, Deficiency Report, and Plan of Correction (Months 7–9): NDAC unannounced survey arrives. Written deficiency report issued within 10 working days. Facility has 10 working days to submit Plan of Correction. Deemed status awarded following acceptance.

Total typical timeline: 6–9 months from initial engagement to CMS deemed status.

What is the Letter of Readiness and when must it be submitted?

The Letter of Readiness is a formal written declaration to NDAC that a facility has completed all preparation and is ready to receive an unannounced survey. It is submitted alongside the NDAC Accreditation Agreement and Business Associate Agreement (BAA). Filing the Letter of Readiness initiates the survey window — NDAC will then schedule and conduct the unannounced survey. Timing this document correctly is critical: submitting too early (before mock survey remediation is complete) means the survey may arrive before the facility is ready. IHS coordinates the timing of this submission as part of the application phase.

What does an NDAC unannounced survey involve?

An NDAC survey is unannounced and typically runs 3 days. Surveyors conduct direct staff observation (hand hygiene, station decontamination, clean/dirty separation), patient record review (IDT care plans, fluid management documentation, Kt/V adequacy logs), water quality system inspection (RO logs, endotoxin results, chlorine/chloramine testing, culture reports), physical plant and Life Safety Code walkthrough, and Medical Director documentation review. Within 10 working days of survey completion, NDAC delivers a written deficiency report citing specific N-tags. Facilities then have exactly 10 working days to submit a Plan of Correction. IHS provides rapid-response support within that mandatory window.

What is the Business Associate Agreement requirement with NDAC?

Facilities must execute a Business Associate Agreement (BAA) with NDAC as part of the enrollment process, alongside the Accreditation Agreement. The BAA establishes NDAC's obligations as a HIPAA business associate — it governs how NDAC handles protected health information encountered during surveys. This is a standard administrative requirement, not a negotiable contract. Facilities unfamiliar with HIPAA BAA requirements sometimes delay enrollment by treating it as an unusual document. IHS guides facilities through both agreements during the application phase to prevent unnecessary delays.

What Life Safety Code (LSC) requirements apply to dialysis facilities under NDAC?

NDAC incorporates CMS Life Safety Code requirements into its survey scope. LSC compliance for dialysis facilities covers fire protection systems, egress paths, electrical systems and emergency power, medical gas storage, and HVAC adequacy. NDAC partners with Ascellon, a specialized LSC engineering firm, for physical plant inspections. Facilities with older buildings or recent renovations commonly have LSC deficiencies. IHS includes a physical plant LSC readiness review in the gap assessment phase — the Bio-Medical Technician resource (0.2–0.4 FTE) handles machine calibration and water system readiness while LSC items are addressed in parallel.

How long does the NDAC accreditation process take?

6–9 months from initial engagement to CMS deemed status award. By phase: Months 1–2 gap assessment and baseline audit; Months 3–4 policy development and remediation; Month 5 mock survey; Month 6 application and Letter of Readiness filing; Months 7–9 NDAC survey, deficiency report receipt, Plan of Correction submission, and deemed status award. This timeline assumes IHS engagement from the start and active facility participation in each phase. Facilities with significant documentation deficiencies or physical plant issues may require additional time in Phase 2.

How much does NDAC accreditation cost?

NDAC does not publicly publish its application fees, 3-day survey fees, or annual maintenance fees — contact NDAC directly (ndacommission.com) for current pricing. For reference, Joint Commission International averages approximately $46,000 per year to maintain accreditation. IHS consulting engagements for full initial NDAC accreditation preparation range from $20,000–$45,000 per facility, depending on documentation maturity, facility complexity, and the scope of policy development required. This is the only published range for NDAC consulting costs in the market.

How does NDAC accreditation cost compare to direct CMS state survey certification?

No published comparison exists — this is one of the most significant data gaps in the dialysis compliance market. Direct CMS state agency certification avoids NDAC's accreditation fees and typically costs less in direct fees. However, it comes with: unpredictable wait times of 6–12 months in many states, no structured preparation framework, no independent quality benchmark, and for North Carolina facilities, a CON compliance risk if the facility relies on state survey timing. NDAC accreditation adds direct cost but provides timeline predictability, a structured quality improvement process, and in several states, specific regulatory benefits. IHS provides a cost-benefit analysis as part of pre-engagement consultation for facilities deciding between pathways.

What does a consulting engagement for NDAC accreditation cost?

IHS full initial accreditation engagements range from $20,000–$45,000 per facility. This includes gap assessment, policy manual development, mock survey, and Plan of Correction support after the NDAC survey. Hourly rates in this specialty: $95–$120/hour for administrative and documentation work, $200–$300/hour for specialized nephrology nurse consultants and former NDAC surveyors. Ongoing annual retainer arrangements for 36-month resurvey cycle support are scoped per facility. IHS is publishing these ranges because NDAC does not publish them and no other firm in this market does either — facilities deserve transparent pricing information before engaging.

What are the most common NDAC survey deficiencies for dialysis facilities?

50% of NDAC's Top 10 deficiencies are infection control failures and 30% are water quality failures. The complete Top 10 by N-tag and deficiency category:

1. N113 (Infection Control): Failure to perform proper hand hygiene and glove changes between patients or tasks
2. N116 (Infection Control): Improper handling of items taken to dialysis station; failure to disinfect upon removal
3. N543 (Clinical/Care Plan): Failure by the Interdisciplinary Team to properly manage and monitor patient fluid volume status
4. N544 (Clinical/Care Plan): Failure to achieve adequate dialysis clearance (missing prescribed Kt/V adequacy targets)
5. N117 (Infection Control): Failure to maintain strict separation of clean and dirty areas, specifically in medication preparation
6. N111 (Infection Control): Failure to maintain generally sanitary and safe physical environment
7. N178 (Water Quality): Failures in bacteriology monitoring and microbiological limits of purification water
8. N180 (Water Quality): Failures in bacteriology monitoring and microbiological limits of dialysate fluid
9. N254 (Water Quality): Lapses in routine microbial monitoring schedules, sample drawing techniques, and documentation
10. N122 (Infection Control): Failure to properly clean and disinfect durable medical equipment between uses

Source: NDAC Accreditation Services Overview. IHS is the only independent consulting firm to publish this deficiency breakdown in searchable, structured format.

What AAMI 2014 water standards does NDAC enforce, and how are they stricter than older standards?

NDAC enforces ANSI/AAMI 2014 water and dialysate standards, which set a maximum Total Viable Bacteria Count of less than 100 CFU/ml with an Action Level trigger at 50 CFU/ml. The legacy 2004 RD52 standard permitted up to 200 CFU/ml — a threshold that is twice as permissive. Facilities commissioned under older standards frequently have water quality systems, culture testing frequencies, and documentation protocols that do not meet AAMI 2014. This gap is one of the most dangerous to leave unaddressed: three of the Top 10 NDAC deficiencies (N178, N180, N254) are water quality citations, and water quality failures can rise to Immediate Jeopardy level in patient-safety investigations. Source: NDAC Accreditation Services Overview.

What happens if a facility fails to correct NDAC deficiencies within the 10 working day window?

NDAC requires Plan of Correction submission within 10 working days of the written deficiency report. Missing this deadline, or submitting an inadequate POC, results in NDAC escalating its response. Escalation paths include: NDAC requiring a revisit survey, extending the deficiency period, or for Immediate Jeopardy citations, immediate escalation to CMS with potential deemed status suspension. For facilities seeking initial accreditation, a failed or delayed POC delays Medicare certification. For resurveyed facilities, escalation can result in loss of existing deemed status and interruption of Medicare billing — the most severe possible outcome. IHS provides rapid-response POC support within the mandatory window to prevent this outcome.

What are the CMS enforcement actions if a dialysis facility loses deemed status?

If a facility loses NDAC deemed status — whether through POC failure, resurvey citation at Condition level, or voluntary withdrawal — it must obtain CMS certification through an alternative pathway to continue billing Medicare. CMS enforcement actions for facilities without deemed status or direct certification include: temporary enrollment suspension, civil monetary penalties, and in the most severe cases, Medicare termination. Re-establishing certification after loss of deemed status requires undergoing the state agency survey process or re-engaging with an accrediting organization from the beginning — adding months and cost to what could have been prevented by maintaining ongoing survey readiness.

NDAC accreditation vs. direct CMS ESRD survey — which is better for a new independent facility?

For a new independent facility, NDAC accreditation is typically the superior path for three reasons. First, state agency surveys currently face 6–12 month backlogs — a new facility relying on state certification cannot bill Medicare for that entire period. Second, NDAC provides a structured preparation framework (gap assessment, policy development, mock survey) that produces a higher-quality compliance foundation than ad hoc state survey preparation. Third, NDAC's contractually governed survey timeline provides planning certainty that state survey scheduling does not. The tradeoff is cost — NDAC accreditation fees and consulting costs are real expenses that direct state certification avoids. For facilities where speed to Medicare billing matters (i.e., nearly all de novo facilities), the math typically favors the accreditation pathway. IHS provides a quantified analysis per facility.

NDAC vs. ACHC for dialysis accreditation — which should a facility choose?

No published independent comparison exists — this is one of the most significant analytical gaps in the dialysis compliance market. Both NDAC and ACHC hold CMS ESRD deemed status. Key differentiators: NDAC is exclusively focused on dialysis and uses the N-tag system with direct V-tag mapping; ACHC is a multi-sector generalist AO that offers a "Renal Dialysis Accelerated Survey" program targeting Texas and hospital-based units with a collaborative survey style. NDAC's exclusivity creates deeper dialysis-specific expertise; ACHC's broader footprint may be advantageous for hospital-based units already accredited in other service lines by ACHC. IHS provides facilities with a structured decision framework — the first independent comparison of these two accreditors available in the consulting market.

How does NDAC accreditation relate to CLIA requirements for dialysis labs?

Dialysis facilities that perform laboratory testing — including routine blood chemistry panels run in-house — must hold a Clinical Laboratory Improvement Amendments (CLIA) certificate. NDAC accreditation does not substitute for CLIA certification, and NDAC surveys do not cover CLIA compliance. Facilities must maintain both their NDAC accreditation (for Medicare deemed status under 42 CFR Part 494) and their CLIA certificate (for in-house laboratory testing) as separate compliance tracks. IHS flags CLIA status during the gap assessment phase and coordinates its review alongside NDAC preparation for facilities that perform in-house lab testing.