Summary & Overview
HCPCS Level II A4595: Electrical Stimulator Supplies, 2‑Lead, Per Month
HCPCS Level II code A4595 denotes monthly supplies for two-lead electrical stimulators, such as TENS and NMES consumables. This code matters nationally because electrical stimulation is a common adjunct in pain management and rehabilitation, and consistent reporting of supply usage affects coverage determination, utilization tracking, and billing accuracy. Payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find benchmarks for utilization and coverage patterns, an outline of common billing considerations, and clinical context for when two-lead stimulator supplies are typically used in outpatient and home settings. The summary highlights the service type and typical sites of service, and identifies common modifiers that may appear on claims. Where payer-specific policies exist, the publication summarizes coverage language and prior authorization requirements. Data not available in the input are noted where applicable.
Billing Code Overview
HCPCS Level II code A4595 represents electrical stimulator supplies, 2 lead, billed per month (examples include TENS and NMES supplies). The code covers consumable supplies required to deliver electrical stimulation therapy and is typically associated with durable medical equipment or outpatient therapy services.
Service type: Durable medical equipment-consumable supplies for electrical stimulation therapy
Typical site of service: Outpatient clinics, physical therapy offices, home health settings where electrical stimulation devices are used by patients
Data not available in the input for associated taxonomies, ICD-10 diagnoses, related codes, and service line.
Clinical & Coding Specifications
Clinical Context
A typical patient is a 54-year-old with chronic low back pain and radicular symptoms who has not achieved adequate relief with medications and physical therapy. The clinician fits a portable electrical stimulator (TENS or NMES) and supplies two-lead electrode sets to be used at home for pain modulation and functional reconditioning. The workflow: outpatient evaluation by a primary care physician or physiatrist establishes the diagnosis and documents medical necessity; a durable medical equipment (DME) or outpatient clinic dispenses the device and A4595 supplies on a monthly basis; documentation includes the prescription, device settings, patient education on electrode placement, skin checks, and a follow-up plan. Billing occurs monthly for replacement of two-lead disposable electrode/supply sets, with modifier usage as appropriate for payer-specific rules and any professional component or unusual circumstances.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
59 | Distinct Procedural Service | When the supply is billed in conjunction with another distinct service on the same day that is not normally reported together. |
52 |