HCPCS Level II S9129: Occupational Therapy, In-Home, Per Diem
Commercial payers pay $104 on average nationally for this procedure.
HCPCS Level II code S9129 describes occupational therapy in the home, billed per diem, representing a full-day home-based occupational therapy service focused on improving functional abilities and activities of daily living; the service type is occupational therapy and the typical site of service is patient's home.
For related coverage guidance, see recent payer policy updates: Fixed Wing Air Ambulance Transport, Air Ambulance, Ambulance Services (for New Mexico Only).
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National Reimbursement Benchmarks
Commercial reimbursement for HCPCS S9129 centers near BUCA’s average commercial rate of $104.30, but payer-specific dispersion varies materially. Blue Cross Blue Shield shows a relatively wide interquartile spread (P75–P25 = $28.50), and Cigna displays very tight upper skewing with P75–P25 = $60.60 driven by a high median; Aetna is essentially flat across listed percentiles (P75–P25 = $0.00), reflecting minimal reported spread. UnitedHealth Group’s interquartile spread is $122.00, the largest observed, indicating substantial variability in commercially paid amounts across contracts.
Taken together, the market clusters around BUCA’s mean yet individual payers diverge: Aetna and Cigna exhibit the narrowest banding behavior while UnitedHealth Group and Blue Cross Blue Shield present the widest dispersion, suggesting more divergent negotiated outcomes under those plans. This summary focuses on the comparative dispersion and central tendency among commercial payers.