Skip to content Credex Healthcare delivers comprehensive nephrology billing services that will benefit nephrologists, kidney care specialists, dialysis centers, and multi-provider nephrology groups. Our services are designed to resolve complex billing challenges, including bundling disputes for dialysis services, prior authorization denials for kidney biopsies and dialysis procedures, and compliance vulnerabilities associated with diagnostic procedures that convert to therapeutic interventions. Each case is managed with strict adherence to payer guidelines that ensure a favorable reimbursement rate.
This end-to-end approach ensures record-low denials and optimizes revenue for your nephrology practice.
First-pass claim approval rate
Average nephrology billing turnaround
Medicare, Medicaid & commercial networks
Dialysis conversion & nephrologist onboarding
Credex Healthcare establishes an industry-standard nephrology billing workflow that mandates a comprehensive review of each procedure report before charge entry. Our credentialed billing specialists validate that procedure codes are fully aligned with the nephrologist’s documentation, accurately assign add-on codes for kidney biopsy and dialysis-related interventions, and apply appropriate modifiers for diagnostic-to-therapeutic conversions. Prior authorization is verified against the procedure performed to prevent downstream denials. By diagnosing potential billing discrepancies before claim submission, we protect your practice from costly revenue mishaps, which include missed add-on codes or incorrect coding of nephrological interventions.
Our nephrology billing services in the USA cover the following:
Procedure claims are up for endorsement with verified CPT codes, correct add-on code relationships, screening-to-therapeutic modifiers where applicable, and prior authorization on file for scheduled procedures. Our team tracks every claim through adjudication and follows up to ensure timely filing.
Credex Healthcare provides end-to-end enrollment for nephrologists, kidney care specialists, and advanced practice providers (APPs) with Medicare, Medicaid, and commercial carriers, including enrollment for dialysis center facilities, should your group own or operate a treatment suite.
Our expert nephrology coders check procedure reports against standard nephrology CPT codes such as 90935 (hemodialysis with single evaluation), 90937 (hemodialysis requiring repeated evaluation), 90945 (dialysis other than hemodialysis), 50394 (injection for nephrostogram and/or ureterogram), 50398 (removal and replacement of nephrostomy catheter), 36589 (removal of tunneled central venous catheter), and 36590 (removal of tunneled central venous catheter with subcutaneous port or pump). They ensure that base and add-on code correspondences stay accurate, modifiers follow payer rules, and the procedure report supports every code submitted.
Most payers require prior authorization for specialized nephrology procedures like dialysis initiation, kidney biopsies, and vascular access surgeries, even when performed for diagnostic purposes. Before scheduling treatments, we initiate and track authorizations to ensure no case proceeds without payer approval for the indication.
As a dedicated nephrology billing provider, Credex Healthcare continuously monitors Medicare coverage determinations and commercial payer references regarding nephrology procedures, including dialysis, kidney biopsies, and vascular access interventions. We maintain up-to-date documentation standards for all nephrology CPT codes, ensuring compliance with payer-specific requirements for chronic kidney disease management, dialysis access, and biopsy services.
Medicare covers medically necessary nephrology procedures such as dialysis, kidney biopsies, and vascular access surgeries based on the patient's clinical status. We manage Medicare nephrology billing by ensuring accurate code selection, adherence to cost-sharing rules, and documentation for every case.
Medicaid nephrology coverage and prior authorization requirements vary by state. Some programs require PA for both dialysis and diagnostic procedures. Our team maintains state-specific Medicaid billing rules and prior-authorization workflows for every state where your practice operates.
Nephrology practices that operate dialysis centers or procedure suites are required to submit both facility and professional claims, each governed by distinct CPT codes, revenue codes, and payer fee schedules. Credex Healthcare manages both billing streams within a unified workflow, ensuring accurate reconciliation and submission for every case.
Specialized nephrology services, including transplants, complex dialysis modalities, and interventional procedures, are managed with specialty-specific code sets, prior authorization protocols, and documentation standards, offered as part of our integrated billing process.
Nephrology claims are susceptible to denials for identifiable reasons, such as omission of required add-on codes for dialysis services, incorrect billing of diagnostic procedures at the therapeutic rate, mismatched prior authorizations, or insufficient procedure report documentation to support therapeutic coding. Credex Healthcare conducts a comprehensive pre-submission review to address these issues, ensuring claims are fully compliant and supported prior to filing.
Our audit process reviews procedure reports against the complete nephrology CPT code set, including 90935, 90937, 90945, 50394, and 50398, to confirm that all add-on codes are appropriately paired with their corresponding base codes. We ensure that no add-on code is submitted independently of its required primary procedure, maintaining strict compliance with payer coding guidelines.
Prior authorization for nephrology procedures is meticulously tracked at both the patient and payer levels. Each authorization is validated so that it encompasses the specific CPT code and clinical indication. When a diagnostic procedure converts to a therapeutic intervention during the encounter, we confirm whether the existing authorization remains valid or initiate a supplemental request as required.
Accounts Receivable Follow-Up
A/Rs for nephrology services are reviewed weekly. Our team proactively pursues all outstanding claims to ensure resolution prior to timely filing deadlines. Disputes related to dialysis bundling or add-on code downgrades are escalated with comprehensive procedure report documentation and payer policy references to support the original billing position.
Revenue leaks in nephrology practices often stem from undetected billing errors, such as failure to bill add-on codes for additional dialysis services, omission of modifiers for diagnostic-to-therapeutic conversions, or missed add-on codes in interventional nephrology cases. These errors can lead to incorrect patient cost-sharing and compliance exposure. Credex Healthcare integrates a procedure-level review into every case prior to claim submission, ensuring that such patterns are identified and corrected immediately, rather than persisting undetected over multiple billing cycles.
Our nephrology billing specialists apply the correct nephrology billing codes and modifiers for every procedure type, base-code and add-on-code combinations, and diagnostic-to-therapeutic conversions, reducing denials caused by nephrology documentation requirements.
Denial management for nephrology claims covers disputes over dialysis bundling, add-on code denials, therapeutic conversion billing corrections, and prior authorization mismatch appeals. Each appeal is built around the language of the procedure report and payer policy that reverses the denial.
Monthly reports cover collections by procedure type and payer, nephrology billing denial trends by CPT code, conversion rate tracking for therapeutic procedures, billing turnaround time, and AR aging, so practice administrators have data to manage the business.
Years of nephrology Billing Expertise
Provider & Facility Enrollment Success
Claim Compliance Rate Across All Payers
Support Available for All Your Needs
Customized nephrology Revenue Cycle Solutions
MD
Uzair
“We performed about 80 dialysis procedures a month, but billing for additional services was inconsistent. Some cases with extra interventions were billed with only the base code, and the modifier for therapeutic conversions was applied inconsistently. Credex reviewed the 3-month worth of claims and identified every case. They corrected open claims, fixed the charge capture workflow, and our monthly nephrology collections increased significantly, revealing how much had been left uncollected.”
Practice Administrator
Achebe
“Managing prior authorizations for nephrology procedures across nine physicians and two dialysis locations caused constant conflicts. Cases were performed on expired authorizations without anyone noticing until remittance was denied. Credex built a per-patient, per-payer authorization tracking system integrated into the scheduling workflow. Post-service authorization denials become nonexistent within three months.”
MD
Marcus
Running a physician-owned dialysis center means billing both facility and professional claims for every case. Claims were submitted with mismatched procedure dates and codes because two billing systems lacked coordination. Credex reconciled both billing tracks into one managed workflow. The combined collection rate improved, and patient billing complaints dropped significantly.
Revenue Cycle Manager
Sandra
Our billing for interventional nephrology procedures was underpaying because we did not see any add-on codes for additional interventions. Nobody noticed this since the base procedure code was paying. Credex audited claims from the past six months, identified the pattern, and recovered a meaningful amount through corrected claims. They also fixed the charge entry template to prevent any errors from happening. That audit was exactly what we needed, but did not know how to ask for.
Practice Assessment
Auditing is the first step, considering key points, such as your current nephrology billing workflow, charge capture process, AR aging by procedure type and payer, denial history by CPT code and reason, conversion tracking for nephrology procedures, and prior authorization gaps. This reveals where collections fall short and which billing errors are addressed first.
Credentialing & Payer Enrollment
Every nephrologist and APP undergo active enrollment with each payer, correct specialty taxonomy, and credentialing status. Dialysis center facility enrollment is verified separately for any procedure suite your group operates.
Prior Authorization Setup
We identify every procedure type and payer-required indication that requires prior authorization, build a patient-level tracking system linked to scheduling, and confirm that authorization covers the specific procedure code before scheduling the patient.
Clean Claim Submission
Our nephrology billing specialists review each procedure report, verify the base-supplemental code correspondence, apply screening-to-therapeutic conversion modifiers where applicable, and submit claims electronically to Medicare, Medicaid, and commercial payers for every case in the billing queue.
Denial Management & Follow-Up
Every claim is tracked through adjudication. Denials are reviewed within 48 hours. Dialysis bundling disputes, add-on code rejections, and prior authorization date conflicts each receive a targeted appeal tailored to the specific procedure documentation and payer policy that will reverse the denial.
Reporting & Ongoing Optimization
Monthly reports cover collections by procedure type and payer, nephrology denial trends by CPT code, nephrology billing turnaround time, and AR aging. We ensure that recurring billing errors are accounted for at the charge-entry level.
Effective nephrology billing operates more than just standard code selection and claim submission. It must consider effectively managing diagnostic-to-therapeutic conversions, accurate application of add-on code relationships for kidney biopsies and dialysis interventions, and strict adherence to payer-specific prior authorization protocols. Generalist billing companies oftentimes do not offer these specialty-specific solutions, hence overlooking chances to earn more. Credex Healthcare’s nephrology billing solutions ensure that every claim is managed by specialists with industry knowledge that accounts for the complexities of nephrology reimbursement and spots revenue leakage before it becomes a major threat to your billing workflows.
We understand that you have unique needs for your nephrology billing. By creating a workflow that meets these needs, we ensure that your nephrology billing is optimized and immune to any errors.
We ensure that only expert account managers for nephrology can handle your billing needs and requirements.
Practice owners receive comprehensive metrics performance categorized by collections by procedure type and payer, denial trends by CPT code, conversion rates for diagnostic-to-therapeutic procedures, accounts receivable aging, and billing turnaround times. These reports accurately visualize the financial performance of your nephrology practice.
All procedure reports, pathology findings, and nephrology records processed during the billing cycle are managed in accordance with HIPAA compliance standards. We maintain documented security standards across all systems utilized for facility and professional claim processing to preserve the data of your practice.
Revenue leakage in nephrology practices often stems from recurring billing practices, including uncoordinated add-on codes for additional dialysis services or unbilled add-on codes for interventional procedures due to inadequate charge-capture templates. A comprehensive audit identifies these errors before they become a threat and quantifies the associated financial impact, enabling corrective action and process improvement.
Credex Healthcare offers a complimentary assessment of your current nephrology billing operations. This review encompasses outstanding receivables by procedure and payer, denial history by CPT code and root cause, accuracy of charge capture for both base and add-on codes, and identification of prior authorization tracking errors. No commitment is required for this evaluation. We quantify potential revenue recovery and recommend process enhancements to prevent recurring losses in future billing cycles.
Nephrology billing encompasses the reimbursement process for specialized services, including dialysis, kidney biopsies, vascular access procedures, office-based management visits, and advanced nephrology interventions. Each service is assigned a specific CPT code reflecting the procedure and any additional interventions performed. These codes correspond to ICD-10 diagnosis codes to establish medical necessity and must be submitted with appropriate modifiers and prior authorization documentation to ensure compliant and timely payment.
Nephrology procedures utilize a defined set of CPT codes. Hemodialysis is typically billed under CPT 90935 for single evaluation sessions and CPT 90937 for sessions requiring repeated evaluation. Other dialysis modalities may use CPT 90945. Kidney biopsies are reported under CPT 50200, while vascular access procedures, such as catheter removal, are billed under CPT 36589 and 36590. Nephrostomy-related interventions are coded as CPT 50394 and 50398. Each procedure must be linked to the appropriate ICD-10 diagnosis code, supported by the correct modifier, and accompanied by comprehensive documentation to meet payer requirements.
Yes. Medicare, Medicaid, and commercial health plans cover medically necessary nephrology procedures, including dialysis, kidney biopsies, and vascular access interventions. Prior to scheduling any treatment, Credex Healthcare verifies Medicare coverage and reviews all payer-specific authorization and clearance requirements to ensure compliance and avoid claim denials.
When all required documentation and coding are ready, Medicare typically processes clean electronic nephrology claims within 14 to 30 days. Commercial payers generally remit payment within 30 days, provided prior authorization and complete procedure documentation are included. Medicaid processing timelines vary by state, ranging from 30 to 60 days. Credex Healthcare conducts a comprehensive pre-submission review for all claims, ensuring that nephrology claims are processed within standard industry timeframes.
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At Credex Healthcare, we know how frustrating it is when claims are denied. That is
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