Summary & Overview
HCPCS K0850: Power Wheelchair Group 3 Heavy Duty, 301–450 lb
HCPCS Level II code K0850 designates a heavy-duty Group 3 power wheelchair with a sling or solid seat/back and a patient weight capacity of 301 to 450 pounds. This code captures provision of a high-capacity power mobility device intended to support mobility, independence, and activities of daily living for patients with substantial body habitus or special seating needs. Nationally, accurate coding for high-capacity power wheelchairs affects access to appropriate durable medical equipment and drives coverage and payment determinations across major payers.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical and billing context for K0850, national reimbursement and coverage considerations, payer-specific policy highlights where available, and common documentation elements that influence medical necessity determinations. The publication summarizes benchmarks and relevant policy updates where they exist, explains typical service lines and sites of service, and outlines how this code fits into the broader durable medical equipment landscape.
Data not available in the input for items such as associated taxonomies, specific ICD-10 pairings, related HCPCS codes, or detailed payer fee schedules is noted where applicable.
Billing Code Overview
HCPCS Level II code K0850 describes a power wheelchair, group 3 heavy duty, sling/solid seat/back, patient weight capacity 301 to 450 pounds. This device is a power mobility device intended for patients who require motorized wheelchair support and have a high weight capacity need. The service type is durable medical equipment (power wheelchair). The typical site of service is patient home or other community settings where durable medical equipment is used, reflecting use in daily mobility and activities of living.
Clinical & Coding Specifications
Clinical Context
A 68-year-old male with morbid obesity (BMI 42), severe osteoarthritis of both knees, and a recent cerebrovascular accident resulting in left-sided hemiparesis requires durable medical equipment to maintain mobility and safety at home. The patient cannot safely ambulate or tolerate a manual wheelchair due to limited upper extremity strength and a body weight of approximately 360 pounds. An evaluation by a rehabilitation physician and a wheelchair seating specialist results in the medical necessity determination for a Group 3 heavy-duty power wheelchair with a sling/solid seat/back and a patient weight capacity of 301 to 450 pounds, billed as K0850.
The clinical workflow includes a referral from the primary care provider to durable medical equipment (DME) services; an in-home assessment by a qualified ATP (Assistive Technology Professional) or occupational therapist to document functional limitations, measurements, and environmental barriers; selection and configuration of the K0850 power wheelchair to meet seating and weight requirements; prior authorization submission to the patient’s payor (example payors: Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, Medicare) including supporting documentation (therapist evaluation, physician order, and weight/measurement documentation); delivery and in-home setup; and training for the patient and caregiver on safe operation, transfers, and basic maintenance. Follow-up for fit, pressure area monitoring, and any required repairs or adjustments is scheduled per DME supplier protocols.
Coding Specifications
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