Summary & Overview
HCPCS Level II S9473: Pulmonary Rehabilitation Program, Non-Physician Per Diem
HCPCS Level II code S9473 denotes a per-diem pulmonary rehabilitation program delivered by a non-physician provider. This code captures structured pulmonary rehab services that support patients with chronic respiratory conditions, focusing on exercise training, education, and symptom management. Nationally, the code is relevant as pulmonary rehabilitation programs are an important component of chronic respiratory disease management and can impact utilization patterns for emergency and inpatient respiratory care.
Key payers included in the discussion are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of what S9473 represents, how it is typically used in clinical and billing workflows, and which payers commonly cover such programs. The publication outlines common modifiers associated with this service and notes where input data is not available. It also presents context on service setting (outpatient or hospital-based rehab programs) and per-diem billing implications.
The piece provides practical benchmarks and policy context relevant to payers and providers, clarifies coding terminology by referencing HCPCS Level II code S9473, and highlights areas where additional documentation or payer-specific guidance may be required. Data not available in the input is explicitly noted where applicable.
Billing Code Overview
HCPCS Level II code S9473 represents a pulmonary rehabilitation program provided by a non-physician provider, billed on a per diem basis. The service type is pulmonary rehabilitation and the typical site of service is settings that deliver structured rehabilitation services for respiratory conditions, such as outpatient rehabilitation centers or hospital-based pulmonary rehab programs.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with chronic obstructive pulmonary disease (COPD) or other chronic respiratory impairment referred for an interdisciplinary pulmonary rehabilitation program provided by non-physician clinicians and billed as S9473 on a per diem basis. The patient presents after recent hospitalization for acute exacerbation of COPD or persistent dyspnea limiting activities of daily living. The clinical workflow begins with an intake assessment by a pulmonary rehabilitation therapist (respiratory therapist or physical therapist) who documents baseline exercise tolerance, dyspnea scale, oxygen requirement, and relevant comorbidities. An individualized plan of care is created with supervised aerobic and strength training, breathing retraining, education on inhaler technique, oxygen titration, and self-management strategies. Typical program days include supervised exercise sessions, respiratory therapy interventions, patient education, and outcome measurement (6-minute walk test, Borg dyspnea scale). Progress is documented daily; per diem billing with S9473 reflects the non-physician provider–led comprehensive services delivered that day. Discharge occurs after the planned course is completed or when goals are met, with a final summary communicated to the referring physician and primary care clinician.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 |