Summary & Overview
HCPCS K0859: Power Wheelchair, Group 3 Heavy Duty, 301–450 lb
HCPCS Level II code K0859 denotes a heavy-duty Group 3 power wheelchair with a single power option, captain's chair, and a patient weight capacity of 301 to 450 pounds. This equipment supports mobility for individuals with significant weight and mobility needs and is a common durable medical equipment category with national relevance due to rising prevalence of obesity and mobility impairment.
Key payers commonly involved in coverage and reimbursement for this equipment include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of what K0859 represents, typical sites of service, and coverage considerations used by major payers. The publication provides benchmarks for utilization and reimbursement where available, summarizes relevant policy updates and coverage criteria, and outlines the clinical context for prescribing and documenting the need for a heavy-duty power wheelchair. Practical billing considerations, common modifiers, and related code groupings are summarized to aid coding accuracy.
Data not available in the input for associated taxonomies, specific ICD-10 diagnoses, and related codes are noted where applicable. The focus is national in scope and intended to inform clinicians, billing professionals, and policy analysts about the administrative and clinical framing of K0859.
Billing Code Overview
HCPCS Level II code K0859 describes a power wheelchair, group 3 heavy duty, single power option, captain's chair, patient weight capacity 301 to 450 pounds. This product is a durable medical equipment mobility device intended for individuals who require a heavy-duty power mobility solution due to higher weight capacity needs.
-
Service type: Durable medical equipment — power mobility device
-
Typical site of service: Home, long-term care facility, or other outpatient residential settings where personal mobility devices are used
Clinical & Coding Specifications
Clinical Context
A typical patient is a middle-aged or older adult with morbid obesity, advanced spinal cord injury, severe neuromuscular weakness, or progressive degenerative joint disease who is unable to ambulate safely and requires a heavy-duty powered mobility device. The clinician (physiatrist, rehabilitation physician, or durable medical equipment supplier working with a physical therapist or occupational therapist) evaluates the patient's mobility needs, seating requirements, and weight capacity needs. A mobility assessment documents functional mobility limitations, home and community access requirements, prior use of scooters or manual wheelchairs, and trialing of power wheelchair features. The prescription for a K0859 power wheelchair (group 3 heavy duty, single power option, captain's chair, patient weight capacity 301 to 450 pounds) is generated when clinical documentation demonstrates the need for a Group 3 heavy-duty power base and seating to safely support the patient. The supplier configures and delivers the device, completes final fitting and training in the patient’s home or clinic, and submits billing to payors with the appropriate HCPCS K0859 code and any required modifiers and supporting documentation (face-to-face evaluation, medical necessity narrative, mobility assessment, supplier delivery notes). Typical sites of service include the patient's home, outpatient rehabilitation clinic, or durable medical equipment supplier facility during delivery and training.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|