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HCPCS E1635: Compact Portable Travel Hemodialyzer System

HCPCS Level II code E1635 denotes a compact, portable travel hemodialyzer system used to deliver hemodialysis outside traditional in-center settings. The code is relevant nationally as portable dialysis technology expands options for patient mobility, home-based therapy, and travel-related care. Payers commonly engaged with claims for this device include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will learn what E1635 represents clinically and operationally, the typical sites of service for billing, and the payer landscape addressed in this briefing. The publication covers reimbursement benchmarks where available, common billing considerations, and the clinical context for portable hemodialyzer use. Data not available in the input is noted where applicable. This summary provides a concise reference for billing professionals, procurement staff, and policy analysts seeking a national overview of coding and service implications for compact travel hemodialyzer systems.

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Billing Code Overview

HCPCS Level II code E1635 describes a compact (portable) travel hemodialyzer system. This code applies to a medical device designed to provide hemodialysis treatment in a portable format intended for travel or transportable use. The service type is the provision and use of a portable hemodialyzer device to deliver dialysis therapy. The typical site of service is non-facility, including patient residences, temporary lodging, or other community settings where travel or portability is required.

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HCPCS E1635: Compact Portable Travel Hemodialyzer System

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

A 62-year-old patient with end-stage renal disease (ESRD) receiving maintenance hemodialysis requires a compact travel hemodialyzer system for short-term use while traveling away from their home dialysis center. The patient has a stable arteriovenous fistula and usual dialysis prescription of thrice-weekly treatments. The nephrology clinic coordinates a portable hemodialysis device rental or supply shipment to a lodging facility or temporary residence. A dialysis nurse or trained technician delivers and sets up the compact system, verifies vascular access function, programs the prescribed blood and dialysate flow rates, conducts a pre-treatment safety check, and supervises or performs the treatment according to the patient’s usual prescription. On completion, the device is cleaned or disposed per manufacturer instructions and the patient returns to their home dialysis schedule. Typical site of service is outpatient or non-facility settings such as hotel, private residence, or transit locations where a compact travel hemodialyzer system enables continuity of prescribed hemodialysis treatments.

Coding Specifications

Modifier	Description	When to Use
`AS`	Non‑participating surgeon	Use when the servicing clinician is a physician who does not participate in the payer’s network for the service (rare for dialysis equipment services).
`52`	Reduced services	Use when the travel hemodialyzer system is furnished with fewer components or for shorter duration than standard rental/service.
`53`	Discontinued procedure	Use if the travel dialysis session is started but discontinued for patient safety reasons before completion.
`56`	Preoperative assessment only	Not commonly used; use only if a pre-procedural dialysis assessment is billed separately and the dialysis device is not furnished.
`62`	Two surgeons	Use when two qualified clinicians share substantial portion of technical oversight during device setup in complex cases.
`80`	Assistant surgeon	Use if an assistant (e.g., vascular surgeon assisting access management) bills for services during setup related to the device.
`82`	Assistant surgeon (when a qualified resident surgeon is unavailable)	Similar to `80` when the assistant is not a PA/NP but a surgeon in absence of resident.
`QK`	Medical direction of two, three, or four concurrent anesthesia procedures	Rarely applicable; include only if anesthesia direction is provided for a transport or procedure accompanying device use.
`QX`	CRNA service: medical direction by a physician	Use only if a CRNA provides sedation services for a procedure associated with device placement and the physician medically directs.
`QY`	Medical direction of one certified registered nurse anesthetist (CRNA) by an anesthesiologist	As above, limited applicability to sedation for access procedures.
`RR`	Right and left or multiple procedures	Use when billing distinguishes multiple distinct procedures or services associated with bilateral access interventions.
`52`	Reduced services	(Note: `52` appears above intentionally to reflect frequent applicability for reduced rental/service duration.)
`53`	Discontinued procedure	(See above; relevant when therapy is stopped early.)
`UE`	Excluded device modifier	Use when reporting a device that is excluded from payment under certain payor rules; applies to specific payer directives about equipment exclusion.

Taxonomy Code	Specialty	Notes
2080P0208X	Nephrology	Nephrologists oversee dialysis prescriptions and device selection.
174400000X	Dialysis Facility	Clinical staff at outpatient dialysis centers coordinate portable system provision and training.
363L00000X	Nurse Practitioner	Advanced practice nurses frequently manage outpatient dialysis care and coordination.
163W00000X	Vascular Surgery	Vascular surgeons manage access issues that may arise with travel hemodialyzer use.
3336C0002X	Certified Clinical Hemodialysis Technician	Technicians perform setup, operation, and patient monitoring for portable systems.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`N18.6`	End stage renal disease	Primary indication for maintenance hemodialysis and need for a travel hemodialyzer system.
`N18.5`	Chronic kidney disease, stage 5	Patients with CKD stage 5 commonly require dialysis and may use portable systems for travel.
`Z99.2`	Dependence on renal dialysis	Captures ongoing dialysis dependence; supports medical necessity for durable or temporary dialysis equipment.
`I95.1`	Orthostatic hypotension	Relevant because intradialytic hypotension or hemodynamic instability may affect portable dialysis planning and monitoring.
`T82.818A`	Mechanical complication of other vascular devices, implants and grafts, initial encounter	Relevant when complications of vascular access or device interfaces require troubleshooting before or during travel dialysis.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`36430`	Irrigation and/or endovascular flushing of indwelling vascular access device, including diagnostic imaging when performed	Performed when suspected access clotting requires declot or flushing prior to using a travel hemodialyzer system.
`36831`	Revision, open, of arteriovenous fistula; first stage	Performed before travel in patients requiring access revision to ensure reliable use of portable dialysis equipment.
`90935`	Hemodialysis procedure with single evaluation by a physician or other qualified health care professional, outpatient hospital or facility, per dialysis session	Represents facility-based hemodialysis sessions; related for clinical comparison and documentation of usual prescription.
`90937`	Hemodialysis procedure with repeated evaluation (two or more per month), outpatient hospital or facility, per dialysis session	Used for more complex or frequently evaluated dialysis patients; helps define expected care level when arranging travel dialysis services.
`99070`	Supplies and materials (used to report supplies not included in other services), e.g., miscellaneous supplies	Used to bill additional supplies associated with furnishing a compact travel hemodialyzer system (if payer allows separate supply billing).

HCPCS E0100: Cane, Adjustable or Fixed, With Tip

HCPCS-E0105-CANE-QUAD-THREE-PRONG-MOBILITY-AID

HCPCS E0105: Cane, Quad or Three Prong, Adjustable or Fixed

HCPCS-E0110-FOREARM-CRUTCHES-PAIR-DME-MOBILITY

HCPCS E0110: Forearm Crutches, Pair, Complete with Tips and Handgrips

HCPCS-E0111-CRUTCH-FOREARM-DURABLE-MEDICAL-EQUIPMENT

HCPCS E0111: Crutch Forearm, Includes Tip and Handgrips

HCPCS-E0112-UNDERARM-WOOD-CRUTCHES-PAIR

HCPCS E0112: Underarm Wooden Crutches, Pair, with Pads and Handgrips

HCPCS-E0113-CRUTCH-UNDERARM-WOOD-ADJUSTABLE-FIXED-WITH-PAD-TIP-HANDGRIP

HCPCS Level II E0113: Crutch Underarm, Wood, with Pad, Tip and Handgrip

HCPCS-E0114-UNDERARM-CRUTCHES-PAIR-ADJUSTABLE-FIXED

HCPCS E0114: Underarm Crutches, Non-Wood, Pair, Adjustable or Fixed

HCPCS-E0116-UNDERARM-CRUTCH-NON-WOOD-ADJUSTABLE-FIXED

HCPCS E0116: Underarm Crutch, Non‑Wood, Adjustable or Fixed

HCPCS-E0117-ARTICULATING-SPRING-ASSISTED-UNDERARM-CRUTCH

HCPCS E0117: Articulating, Spring-Assisted Underarm Crutch

HCPCS-E0118-LOWER-LEG-PLATFORM-CRUTCH-SUBSTITUTE

HCPCS E0118: Lower Leg Platform Crutch Substitute

Showing 1–10 of 670

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`AS`	Non‑participating surgeon	Use when the servicing clinician is a physician who does not participate in the payer’s network for the service (rare for dialysis equipment services).
`52`	Reduced services	Use when the travel hemodialyzer system is furnished with fewer components or for shorter duration than standard rental/service.
`53`	Discontinued procedure	Use if the travel dialysis session is started but discontinued for patient safety reasons before completion.
`56`	Preoperative assessment only	Not commonly used; use only if a pre-procedural dialysis assessment is billed separately and the dialysis device is not furnished.
`62`	Two surgeons	Use when two qualified clinicians share substantial portion of technical oversight during device setup in complex cases.
`80`	Assistant surgeon	Use if an assistant (e.g., vascular surgeon assisting access management) bills for services during setup related to the device.
`82`	Assistant surgeon (when a qualified resident surgeon is unavailable)	Similar to `80` when the assistant is not a PA/NP but a surgeon in absence of resident.
`QK`	Medical direction of two, three, or four concurrent anesthesia procedures	Rarely applicable; include only if anesthesia direction is provided for a transport or procedure accompanying device use.
`QX`	CRNA service: medical direction by a physician	Use only if a CRNA provides sedation services for a procedure associated with device placement and the physician medically directs.
`QY`	Medical direction of one certified registered nurse anesthetist (CRNA) by an anesthesiologist	As above, limited applicability to sedation for access procedures.
`RR`	Right and left or multiple procedures	Use when billing distinguishes multiple distinct procedures or services associated with bilateral access interventions.
`52`	Reduced services	(Note: `52` appears above intentionally to reflect frequent applicability for reduced rental/service duration.)
`53`	Discontinued procedure	(See above; relevant when therapy is stopped early.)
`UE`	Excluded device modifier	Use when reporting a device that is excluded from payment under certain payor rules; applies to specific payer directives about equipment exclusion.

Taxonomy Code	Specialty	Notes
2080P0208X	Nephrology	Nephrologists oversee dialysis prescriptions and device selection.
174400000X	Dialysis Facility	Clinical staff at outpatient dialysis centers coordinate portable system provision and training.
363L00000X	Nurse Practitioner	Advanced practice nurses frequently manage outpatient dialysis care and coordination.
163W00000X	Vascular Surgery	Vascular surgeons manage access issues that may arise with travel hemodialyzer use.
3336C0002X	Certified Clinical Hemodialysis Technician	Technicians perform setup, operation, and patient monitoring for portable systems.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`N18.6`	End stage renal disease	Primary indication for maintenance hemodialysis and need for a travel hemodialyzer system.
`N18.5`	Chronic kidney disease, stage 5	Patients with CKD stage 5 commonly require dialysis and may use portable systems for travel.
`Z99.2`	Dependence on renal dialysis	Captures ongoing dialysis dependence; supports medical necessity for durable or temporary dialysis equipment.
`I95.1`	Orthostatic hypotension	Relevant because intradialytic hypotension or hemodynamic instability may affect portable dialysis planning and monitoring.
`T82.818A`	Mechanical complication of other vascular devices, implants and grafts, initial encounter	Relevant when complications of vascular access or device interfaces require troubleshooting before or during travel dialysis.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`36430`	Irrigation and/or endovascular flushing of indwelling vascular access device, including diagnostic imaging when performed	Performed when suspected access clotting requires declot or flushing prior to using a travel hemodialyzer system.
`36831`	Revision, open, of arteriovenous fistula; first stage	Performed before travel in patients requiring access revision to ensure reliable use of portable dialysis equipment.
`90935`	Hemodialysis procedure with single evaluation by a physician or other qualified health care professional, outpatient hospital or facility, per dialysis session	Represents facility-based hemodialysis sessions; related for clinical comparison and documentation of usual prescription.
`90937`	Hemodialysis procedure with repeated evaluation (two or more per month), outpatient hospital or facility, per dialysis session	Used for more complex or frequently evaluated dialysis patients; helps define expected care level when arranging travel dialysis services.
`99070`	Supplies and materials (used to report supplies not included in other services), e.g., miscellaneous supplies	Used to bill additional supplies associated with furnishing a compact travel hemodialyzer system (if payer allows separate supply billing).

HCPCS E0100: Cane, Adjustable or Fixed, With Tip

HCPCS-E0105-CANE-QUAD-THREE-PRONG-MOBILITY-AID

HCPCS E0105: Cane, Quad or Three Prong, Adjustable or Fixed

HCPCS-E0110-FOREARM-CRUTCHES-PAIR-DME-MOBILITY

HCPCS E0110: Forearm Crutches, Pair, Complete with Tips and Handgrips

HCPCS-E0111-CRUTCH-FOREARM-DURABLE-MEDICAL-EQUIPMENT

HCPCS E0111: Crutch Forearm, Includes Tip and Handgrips

HCPCS-E0112-UNDERARM-WOOD-CRUTCHES-PAIR

HCPCS E0112: Underarm Wooden Crutches, Pair, with Pads and Handgrips

HCPCS-E0113-CRUTCH-UNDERARM-WOOD-ADJUSTABLE-FIXED-WITH-PAD-TIP-HANDGRIP

HCPCS Level II E0113: Crutch Underarm, Wood, with Pad, Tip and Handgrip

HCPCS-E0114-UNDERARM-CRUTCHES-PAIR-ADJUSTABLE-FIXED

HCPCS E0114: Underarm Crutches, Non-Wood, Pair, Adjustable or Fixed

HCPCS-E0116-UNDERARM-CRUTCH-NON-WOOD-ADJUSTABLE-FIXED

HCPCS E0116: Underarm Crutch, Non‑Wood, Adjustable or Fixed

HCPCS-E0117-ARTICULATING-SPRING-ASSISTED-UNDERARM-CRUTCH

HCPCS E0117: Articulating, Spring-Assisted Underarm Crutch

HCPCS-E0118-LOWER-LEG-PLATFORM-CRUTCH-SUBSTITUTE

HCPCS E0118: Lower Leg Platform Crutch Substitute

Showing 1–10 of 670

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

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HCPCS E1635: Compact Portable Travel Hemodialyzer System

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Billing Code Overview

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HCPCS E1635: Compact Portable Travel Hemodialyzer System

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

HCPCS E1635: Compact Portable Travel Hemodialyzer System

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Billing Code Overview

HCPCS E1635: Compact Portable Travel Hemodialyzer System

Sign up for hcpcs E1635 policy alerts

Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

What does HCPCS code E1635 describe and where is it typically used?

Under what clinical circumstances would E1635 be reported?

Which related CPT codes should I consider when billing alongside E1635?

Which modifiers might be relevant when submitting claims for E1635?

Which payers cover E1635 and does the page specify reimbursement rates or coverage criteria?

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

What does HCPCS code E1635 describe and where is it typically used?

Under what clinical circumstances would E1635 be reported?

Which related CPT codes should I consider when billing alongside E1635?

Which modifiers might be relevant when submitting claims for E1635?

Which payers cover E1635 and does the page specify reimbursement rates or coverage criteria?

References