Summary & Overview

HCPCS S5518: Home Infusion Therapy, Catheter Repair Supplies

HCPCS Level II code S5518 represents the bundle of supplies used for catheter repair within home infusion therapy. This code captures material and supply components necessary to restore or maintain catheter function for patients receiving infusions at home. Nationally, accurate use of this code is important for proper billing of home infusion services and for consistent tracking of resource utilization in post-acute and home-based care settings.

Key payers commonly involved in coverage decisions include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of what S5518 denotes, how it fits into home infusion service lines, and which payers are typically engaged in reimbursement determinations. The publication outlines expected benchmarks and policy considerations relevant to billing and coding of home infusion catheter repair supplies, highlights clinical context for when catheter repair supplies are used in home settings, and notes where input data was not provided.

This summary is written for a national audience and aims to clarify the code's scope, payer landscape, and the types of operational and policy questions stakeholders typically address when managing home infusion supply billing.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareS5518HCPCS Level IIhome infusioncatheter repairinfusion supplieshome healthbillingmedical coding

Billing Code Overview

HCPCS Level II code S5518 describes home infusion therapy, all supplies necessary for catheter repair. The service type is home infusion therapy related to catheter repair, encompassing the supplies required to diagnose, access, and repair indwelling catheters used for infusion. The typical site of service is the patient's home, where infusion services and catheter maintenance or repair are performed.

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A patient receiving home infusion therapy for long-term intravenous medication presents with a malfunctioning central venous catheter (tunneled or implanted port) that requires in-home repair of the catheter lumen or external catheter components. Typical patients are adults or pediatric patients receiving parenteral antimicrobial therapy, parenteral nutrition, or chronic infusion therapies who cannot travel to an infusion clinic or whose repair can be safely performed in the home. The home infusion nurse assesses catheter integrity, performs sterile technique, isolates the malfunctioning segment, and replaces or repairs external catheter components (e.g., external extension sets, caps, clamps, connectors) or performs minor repairs to tunneled catheter external segments. Supplies necessary for the repair (dressings, sterile saline, syringes, clamps, replacement connectors, caps, flush solutions, adhesive devices) are provided and billed under S5518. Documentation includes indication for repair, pre- and post-repair catheter function (e.g., aspiration, flushing, line patency), photos or diagrams if required by payors, time on site, and any complications or escalation to surgical or clinic-based repair. Typical site of service is the patient home; procedure is performed by home infusion nurses or qualified clinicians in the home setting.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier — standard service	Use when no special circumstances apply and the service is provided as usual.
`22`	Increased procedural services	Use when repair requires substantially greater effort, complexity, or time than usual.
`23`	Unusual anesthesia	Use if unexpected general anesthesia or deep sedation is required for the repair in the home (rare).
`52`	Reduced services	Use when only part of the repair service is furnished or a component of the usual repair is omitted.
`53`	Discontinued procedure	Use when the repair attempt is started but stopped due to patient condition or other uncontrollable events.
`54`	Surgical care only	Use when another clinician performed the repair procedure in a surgical/procedural role and post-op care is not included.
`55`	Postoperative management only	Use when only follow-up/home postoperative management for a prior repair is provided.
`62`	Two surgeons	Use when two clinicians with different qualifications jointly perform a complex in-home repair.
`80`	Assistant surgeon	Use when an assistant is required during a complex catheter repair in the home.
`82`	Assistant surgeon (when a qualified resident is unavailable)	Use when an assistant is used and resident assistance is not available.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery	Use when an APP acts as assistant during an in-home repair under applicable payor policy.
`CQ`	Service furnished by a physical therapist in home health or hospice	Use only if a physical therapist provides qualifying components of the visit per payor rules (rare).
`QX`	Modifier for services requiring assistant surgeon by non‑physician practitioner	Use when assistant services are furnished by a qualified non-physician practitioner under payor rules.
`QY`	Certified registered nurse anesthetist (CRNA) services	Use if anesthesia services by CRNA are documented and reportable in the home setting.

Taxonomy Code	Specialty	Notes
`254E00000X`	Infusion Nurse	Primary clinician performing home catheter repair and infusion management.
`363L00000X`	Home Health Agency	Agencies coordinating supplies and nursing visits for home infusion catheter repairs.
`165Z00000X`	Vascular Access Specialist	Clinicians specialized in catheter maintenance, troubleshooting, and minor repairs.
`208000000X`	Internal Medicine	Physicians overseeing complex infusion regimens and authorizing in-home repairs.
`2086S0205X`	Interventional Radiology (if consulted)	Specialty consulted for imaging-guided or more complex catheter interventions (coordinate transfer if needed).

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`T85.79XA`	Other complications of vascular device, implant and graft, initial encounter	Includes device malfunction or complication requiring catheter repair in the home.
`T82.89XA`	Other complications of cardiac and vascular devices, implants and grafts, initial encounter	Used for complications of indwelling vascular devices that necessitate repair.
`Z45.2`	Encounter for adjustment and management of vascular access device	Reflects clinical management visit for catheter function and repair.
`Z43.1`	Encounter for attention to other indwelling catheter	Used when attention to an indwelling venous catheter is the focus of the visit.
`B95.6`	Methicillin susceptible Staphylococcus aureus infection as the cause of diseases classified elsewhere	Coded when catheter-related infection is documented and may prompt repair or replacement.
`B96.89`	Other specified bacterial agents as the cause of diseases classified elsewhere	Used for documented infectious agents associated with catheter complications.
`R31.0`	Hematuria (if present)	Example of a presentation finding when catheter trauma causes blood in the line or patient output (contextual).
`R31.9`	Hematuria, unspecified	Alternative code for documented bleeding related to catheter injury.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`36415`	Collection of venous blood by venipuncture	May be performed before or after repair to obtain labs relevant to infusion therapy or infection evaluation.
`36561`	Insertion of tunneled centrally inserted central venous catheter, without subcutaneous port or pump	Related procedural code for situations when repair fails and catheter replacement is required in a procedural setting.
`36568`	Exchange of tunneled central venous catheter without subcutaneous port or pump, over a guidewire	Relevant if in-home repair is unsuccessful and an exchange is performed in a clinical setting.
`99024`	Postoperative follow-up visit, typically after surgery	Used for routine follow-up care related to catheter repair when billed separately per payor rules.
`99070`	Supplies and materials (eg, gloves, bandages), used for direct patient care, not otherwise billed	Ancillary supply billing when individual supply tracking is required alongside `S5518` per payor policy.