Summary & Overview
HCPCS T1001: Nursing Assessment / Evaluation
HCPCS Level II code T1001 denotes a nursing assessment/evaluation performed by a licensed nurse to document a patient’s clinical status and support care planning. As a non-physician assessment code, T1001 is used across multiple care settings where nursing evaluations are integral to care coordination, including home health, long-term care, outpatient clinics, and community-based services. The code’s use matters nationally because nursing assessments are foundational to patient safety, care transitions, and value-based payment models that emphasize coordinated, multidisciplinary care.
This analysis covers common national payers: Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of billing and coverage context, comparative benchmarks where available, typical clinical scenarios for use, and notes on documentation and service settings. The publication also summarizes policy considerations relevant to payer coverage and claims processing for nursing assessment services, and highlights where data is not available in the input. Information is presented to inform coding accuracy, billing workflows, and administrative review across national payers.
Billing Code Overview
HCPCS Level II code T1001 represents nursing assessment / evaluation. The service involves a licensed nurse performing an initial or ongoing assessment of a patient’s health status, which includes gathering history, assessing clinical signs and symptoms, and documenting findings to inform care planning.
Service type: Nursing assessment and evaluation
Typical site of service: Clinical settings where nursing assessments are performed, such as outpatient clinics, home health visits, long-term care facilities, and other ambulatory care environments.
Clinical & Coding Specifications
Clinical Context
A typical patient is a homebound adult with chronic heart failure and recent weight gain, shortness of breath, and edema referred for a nursing assessment. A registered nurse visits the patient at home or in an outpatient clinic to perform a comprehensive nursing assessment including vital signs, focused history (symptom onset, medication adherence, fluid intake), medication reconciliation, skin and peripheral edema inspection, oxygen saturation, and targeted functional and safety screening. The nurse documents findings, establishes immediate nursing interventions (e.g., diuretic education, oxygen adjustment, referral to the primary care provider or cardiology), and communicates the assessment and plan to the ordering clinician. The encounter is typically billed under T1001 for the nursing assessment/evaluation when provided as part of home health, hospice, or clinic-based nursing services. Typical sites of service include the patient’s home, a nursing facility, hospice setting, or outpatient clinic where qualified nursing staff perform the assessment. Patient modifiers may be appended to reflect circumstances such as increased procedural services, professional component distinctions, or bilateral/unilateral considerations when applicable to ancillary services performed during the visit.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier / Standard reporting | Use when no special circumstances apply and the service is billed in the usual manner |