Nephrology Billing — Built for Your Practice
Nephrology billing is dialysis billing — and dialysis billing operates on an entirely different framework than any other specialty. ESRD patients don't generate individual claim visits; they generate monthly capitation payments based on how many face-to-face physician visits were documented during that calendar month. Bill the wrong capitation code (90962 for one visit when four visits occurred) and you've permanently lost three visits worth of reimbursement for that month.
Our nephrology billing team tracks face-to-face visit counts for every ESRD patient, every month, and applies the correct capitation code (90960 for 4+ visits, 90961 for 2–3 visits, 90962 for one visit). We also manage the non-dialysis revenue that nephrologists routinely miss: CKD management E&M codes, transitional care for new ESRD starts, acute dialysis billing for AKI patients that should never be coded as ESRD, and vascular access procedure billing that represents a significant revenue stream.
Why Nephrology Billing Is Complex
The specific billing challenges in nephrology:
- ESRD capitation visit-count tracking — the monthly capitation code depends on documented face-to-face visits: 90960 (4+ visits), 90961 (2–3 visits), 90962 (1 visit). End-of-month visit counts must be accurate. A practice with 120 ESRD patients that bills 90961 when documentation shows 4 visits loses the difference between 90961 and 90960 rates on every affected patient every month
- ESRD vs. AKI billing distinction — acute kidney injury dialysis (inpatient or outpatient) is billed using the standard E&M or critical care codes, not the ESRD monthly capitation codes. An AKI patient receiving temporary dialysis who is incorrectly placed on the ESRD monthly billing track generates billing errors and compliance issues. The distinction: ESRD = chronic kidney failure on permanent dialysis; AKI = acute temporary need
- Non-ESRD services on dialysis days — services unrelated to ESRD are separately billable even on dialysis days. Hypertensive urgency management, hypoglycemia treatment, or an acute fracture evaluation during a dialysis visit can be billed with modifier -25 if the documentation supports a significant separately identifiable service
- New ESRD patient transitional billing — when a CKD patient transitions to ESRD and starts dialysis, a specific set of initial ESRD services applies during the first month. These transitional codes cover the initiation period and reimburse differently from the ongoing monthly codes. Most practices miss this one-time billing window
- Home dialysis training and supervision — home hemodialysis and peritoneal dialysis training (90989–90993) generates separately billable codes for each training session. Monthly home dialysis supervision (90963 for HHD, 90964 for CAPD, 90965 for CCPD) uses the same visit-count framework as in-center dialysis
- ✓ Specialty-specific denial prevention
- ✓ Certified coders trained on your CPT codes
- ✓ Payer-specific rules for Nephrology
Common Nephrology CPT Codes We Handle
Our Nephrology billing team is trained on every major procedure code — from E&M visits to specialty-specific procedures — ensuring accurate coding and maximum reimbursement.
Not seeing your code? We handle all Nephrology CPT, HCPCS, and ICD-10 codes.
Top Nephrology Claim Denial Reasons — and How We Eliminate Them
Most Nephrology denials are preventable. Our team knows exactly what to look for before submission.
❌ Wrong ESRD Capitation Code Due to Inaccurate Visit Counting
At the end of each month, the capitation code submitted must match the actual number of documented face-to-face physician visits for each ESRD patient. Practices that submit 90960 without verifying that 4+ visits are documented open themselves to post-payment audit; those that submit 90961 when 4 visits occurred are permanently underpaid. A 150-patient ESRD panel where 30% of months use the wrong code tier represents thousands of dollars in monthly revenue variance.
✓ Our Fix
Our ESRD billing system maintains a per-patient monthly visit log that is updated every time a dialysis visit is documented. At month-end, the visit count is automatically verified against the capitation code selected. Discrepancies generate an alert before submission — not a correction request after audit.
❌ AKI Patient Incorrectly Billed on ESRD Monthly Track
An AKI patient requiring temporary dialysis during hospitalization should be billed using inpatient E&M or critical care codes — not ESRD monthly capitation codes. When a hospitalist or nephrologist places an AKI patient on the ESRD billing track during a temporary dialysis course, it creates compliance issues and incorrect billing patterns that persist even if the patient recovers kidney function and never becomes ESRD.
✓ Our Fix
We maintain separate billing tracks for ESRD patients (monthly capitation) and AKI/acute dialysis patients (per-service billing). New patients are classified at intake based on their underlying diagnosis and dialysis indication. Any patient crossing from ESRD track to acute track (or vice versa) requires physician attestation of the clinical change.
❌ Vascular Access Procedure Prior Authorization Not Obtained
AV fistula creation (36818, 36819), AV graft placement (36830), fistula revision (36832), and thrombectomy (36831) require prior authorization from most commercial payers and Medicare Advantage plans. Missing authorization on a $2,500–$4,500 vascular access procedure means billing a non-covered service with limited retroactive appeal options.
✓ Our Fix
Every elective vascular access procedure is authorized before the surgical date. Authorization requests include: the specific procedure planned, clinical documentation of fistula/graft failure or maturation failure, imaging supporting the planned access site, and the nephrologist's assessment of access needs. Emergency vascular access (thrombectomy, urgent revision) is handled with expedited same-day authorization requests.
❌ Separately Billable Service on Dialysis Day Billed Without Modifier -25
ESRD monthly capitation includes all dialysis-related services. When an unrelated problem is managed on a dialysis day — a new rash requiring dermatology referral, ankle pain from a fall, or blood glucose emergency — that service is separately billable. But it requires modifier -25 on the E&M code documenting a significant, separately identifiable service beyond the dialysis-related care. Missing modifier -25 results in the payer bundling the additional E&M into the monthly capitation payment.
✓ Our Fix
We review monthly dialysis visit notes for documentation of non-ESRD issues addressed during the visit. When significant separate problems are documented with appropriate clinical content (history, exam, assessment, plan beyond dialysis adjustment), we add the E&M code with modifier -25. We do not add E&M codes without documentation supporting a separate identifiable service.
Everything Included with ZenoMedix RCM Nephrology Billing
- ESRD monthly capitation visit-count tracking — 90960/90961/90962 accuracy guaranteed
- AKI acute dialysis billing separated from ESRD track with compliance documentation
- New ESRD patient transitional billing (first month initiation period coding)
- Home dialysis training (90989–90993) and monthly supervision (90963–90965) billing
- Vascular access surgery prior authorization and procedure billing (36818–36832)
- Kidney biopsy (50200) with imaging guidance and pathology coordination
- CKD stage-specific E&M coding with annual wellness and CCM billing for eligible patients
- 98.5%+ collection rate for nephrology and dialysis practices
Complete Revenue Cycle for Nephrology Practices
"Our Nephrology practice increased collections by 30% in just 90 days. Phenomenal team."— Practice Manager, Nephrology Group
Nephrology Billing Available in All 50 States
From California to New York, our Nephrology billing specialists understand your state's Medicaid program, payer mix, and compliance requirements.
Find Your State →Nephrology Billing FAQ
ESRD monthly capitation billing replaces individual visit billing for end-stage renal disease patients on dialysis. The nephrologist submits one capitation claim per patient per month, using a code that reflects the number of documented face-to-face visits during that month: 90960 for 4 or more visits, 90961 for 2–3 visits, and 90962 for 1 visit. The monthly payment varies by code tier and by Medicare fee schedule locality. At the end of each month, we audit the visit documentation for every ESRD patient and assign the correct code before submitting. We never submit capitation codes without verifying the supporting visit documentation.
ESRD is permanent kidney failure requiring lifelong dialysis. AKI is acute kidney injury requiring temporary dialysis during a critical illness. The billing is entirely different: ESRD = monthly capitation codes (90960-90965); AKI = per-session inpatient evaluation codes or outpatient dialysis procedure codes (90937 for hemodialysis, 90945 for peritoneal or other methods). When an AKI patient recovers and dialysis is discontinued, billing stops. When an AKI patient progresses to ESRD, the ESRD billing track begins. We document the clinical transition clearly in the billing record and coordinate with the physician to ensure the correct track is active for each patient.
Yes. Home peritoneal dialysis billing uses separate monthly capitation codes from in-center hemodialysis: 90963 (home hemodialysis), 90964 (CAPD — continuous ambulatory peritoneal dialysis), 90965 (CCPD — continuous cycling peritoneal dialysis). Training for home dialysis is separately billable using 90989 (home dialysis — less than 3 months of ESRD) or 90993 (training each session). We track home dialysis training sessions and monthly supervision visits separately from in-center patient tracking.
The month a CKD patient starts dialysis is the transition month. Medicare pays the full monthly ESRD capitation even if dialysis starts mid-month. The initiating nephrologist should bill 90960 (if 4+ visits occurred, including the initiation visit) or the appropriate lower-tier code for that partial month. We identify new ESRD starts on the day dialysis is initiated, open an ESRD billing record immediately, and ensure the first month claim captures all physician contacts during the initiation period — including the pre-ESRD education visit, initiation visit, and any follow-up visits in that first calendar month.
Yes. Post-transplant nephrology billing is fee-for-service E&M billing (not capitation) with specific considerations: transplant patients are no longer ESRD patients for billing purposes once they have a functioning kidney, immunosuppressive medication management requires its own prior authorization track, and transplant-related complications (rejection episodes, biopsy-confirmed rejection) have specific diagnosis codes that affect billing. We maintain separate billing configurations for dialysis patients (monthly capitation) and post-transplant patients (standard E&M + transplant management codes).
Nephrology Billing Results — By the Numbers
See How Much More Your Nephrology Practice Can Collect
- ✓Specialty-specific coding analysis
- ✓Denial pattern review
- ✓Payer mix assessment
- ✓Revenue recovery estimate