Summary & Overview
HCPCS A4721: Dialysate Solution 1000–1999 cc for Peritoneal Dialysis
HCPCS Level II code A4721 identifies a dialysate solution for peritoneal dialysis in a package volume greater than 999 cc and up to 1999 cc, containing any concentration of dextrose. This supply code is relevant to clinicians, dialysis providers, and payers because it defines the product unit used in ambulatory and home peritoneal dialysis care and affects billing, inventory, and coverage determinations at the national level. Key payers commonly involved in coverage and payment decisions include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise overview of the code's clinical context and service setting, followed by benchmark and policy-oriented material where available. The publication covers typical site-of-service implications for outpatient and home dialysis programs, common modifiers used in reporting, and payer coverage patterns when available. It also summarizes the operational relevance for supply management and claims processing. Data not available in the input will be noted where applicable.
Billing Code Overview
HCPCS Level II code A4721 describes a dialysate solution for peritoneal dialysis packaged in a fluid volume greater than 999 cc but less than or equal to 1999 cc, with any concentration of dextrose. The service type is peritoneal dialysis supply. The typical site of service is outpatient or home peritoneal dialysis settings, where dialysate solutions of this volume are used for exchanges during continuous ambulatory or automated peritoneal dialysis.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with end-stage renal disease (ESRD) on chronic peritoneal dialysis presents for routine outpatient exchange of peritoneal dialysate. The patient uses automated peritoneal dialysis (APD) at night and requires daytime manual exchanges of dialysate solution. The prescribed solution is a dextrose-containing dialysate with a single bag volume of 1,500 cc. The clinical workflow includes: nursing preparation of the sterile field, verification of prescription and bag concentration, connection of the sterile dialysis bag to the peritoneal catheter extension set, instillation of the dialysate, dwelling for the prescribed time, and drainage. Monitoring for signs of peritonitis, catheter dysfunction, and hemodynamic instability occurs during and after the exchange. Documentation includes product HCPCS code A4721, lot number, bag volume, concentration of dextrose, time of instillation and drainage, name of performing clinician or dialysis nurse, and any adverse events.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Default/No modifier | Use when no specific modifier applies to the supply billing. |
22 |