Summary & Overview
HCPCS T1021: Home Health Aide or Certified Nurse Assistant, Per Visit
HCPCS Level II code T1021 denotes a single visit by a home health aide or certified nurse assistant to provide basic patient care and assistance with activities of daily living in the patient’s residence. This code is central to billing for non-skilled, hands-on personal care delivered outside institutional settings, and it has implications for home- and community-based care access, utilization oversight, and payer coverage policies nationwide.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise briefing on what T1021 represents clinically and operationally, plus a national perspective on payer coverage patterns and billing practice considerations. The publication highlights common billing modifiers and service-line context relevant to home health aide visits, and it outlines expected documentation and service delivery settings.
This summary provides clinicians, billing staff, and policy analysts with the foundational context needed to interpret use of T1021, understand which major payers commonly process these claims, and review the regulatory and operational factors that shape home health aide visit billing on a national scale.
Billing Code Overview
HCPCS Level II code T1021 represents home health aide or certified nurse assistant services billed per visit. The service type is personal care and assistance provided by a home health aide or certified nursing assistant. The typical site of service is the patient's home or community residence, delivered as an in-person visit to support activities of daily living, basic patient care, and assistance with self-care tasks.
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Clinical & Coding Specifications
Clinical Context
A common scenario for billing T1021 involves an elderly patient recently discharged from the hospital after treatment for congestive heart failure who requires assistance with activities of daily living (ADLs) during a home health episode. A home health aide or certified nursing assistant (CNA) visits the patient’s home to provide support such as bathing, dressing, toileting, ambulation assistance, medication reminders (non-skilled), and light household tasks related to the patient’s care plan. The clinical workflow typically includes: a physician or home health agency intake assessing functional needs; development of a home care plan by the agency and, when applicable, coordination with a registered nurse or physical therapist for skilled services; scheduling of aide visits; documentation of visit start and stop times, tasks performed, patient response, and any changes in status; and periodic clinician review to determine ongoing need or modification of services. Visits may be billed per visit using T1021 when services are non-skilled personal care provided by a home health aide or CNA under the direction of the home health agency.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when documentation supports substantially greater services than typically required for a visit, with clear justification in the record. |