Scope of Practice | Study Notes

Legal Boundaries of CNA Practice

A Certified Nursing Assistant’s scope of practice defines the tasks and responsibilities that a CNA is legally permitted to perform under the supervision of a licensed nurse (RN or LPN). Understanding these boundaries is essential for safe patient care, legal protection, and exam success. Practicing outside the scope of practice can lead to disciplinary action, harm to patients, and legal consequences.^[1]

For the CNA exam and daily practice, students must know which tasks are allowed, which require delegation from a nurse, and which are strictly prohibited. This knowledge ensures patient safety, respect for professional roles, and effective teamwork in the healthcare setting.

Essential Terminology for Delegation and Competency

Scope of Practice: The range of roles, functions, responsibilities, and activities that a healthcare professional is educated, competent, and legally authorized to perform.^[2]
Delegation: The process by which a licensed nurse (RN or LPN) transfers the authority to perform a specific nursing task to a competent CNA. The nurse retains accountability for the overall care.^[3]
Supervision: The licensed nurse provides guidance, oversight, and direction for tasks delegated to the CNA. Supervision may be direct (on-site) or indirect (available by communication).^[4]
Competency: A CNA must demonstrate the knowledge, skills, and ability to perform a task safely and effectively before performing it independently.
Unlicensed Assistive Personnel (UAP): A broader term for healthcare workers (including CNAs) who are not licensed but assist licensed staff in patient care tasks.

Guidelines for Permitted and Prohibited Responsibilities

General Rules of Scope of Practice for CNAs

CNAs work under the direction of a licensed nurse and never independently assess, diagnose, plan care, or prescribe treatments.^[1]
Tasks must be delegated by a nurse and must fall within the CNA’s training and the facility’s policies.
If a task is not learned during CNA training or is not included in the state’s CNA role list, it cannot be performed.
The CNA must refuse any assignment that is unsafe, beyond their training, or outside the legal scope of practice, and report this to the supervising nurse.^[3]
State laws and regulations may vary; CNAs must know their specific state’s guidelines.

Common Tasks Within a CNA’s Scope of Practice

Assisting with activities of daily living (ADLs): bathing, dressing, grooming, toileting, feeding, and ambulation.
Vital signs measurement: temperature, pulse, respiration, blood pressure, oxygen saturation.
Basic hygiene and skin care: oral care, perineal care, back rubs, turning and repositioning.
Mobility and transfer assistance: using gait belts, wheelchairs, and mechanical lifts as trained.
Measurement and recording: intake and output (I&O), height, weight, urine specimen collection.
Safety measures: bed alarms, side rails, call light placement, fall prevention.
Basic infection control: hand hygiene, PPE use, isolation precautions.
Observation and reporting: reporting changes in patient condition to the nurse.

Tasks Typically Outside a CNA’s Scope of Practice (Prohibited)

Administering medications (except in some states with additional training for “medication aide” roles — this is NOT standard CNA practice).
Sterile procedures (e.g., catheter insertion, wound packing, tracheostomy suctioning).
Nursing assessments (e.g., lung sounds, wound evaluation, neurologic checks) — CNAs report observations but do not interpret or document assessment findings as a nurse would.
Developing care plans or altering existing plans.
Inserting or removing tubes (NG tubes, foley catheters, IV lines).
Administering oxygen (setting flow rates) — CNAs can apply oxygen only under direct order and with specific training in some states; generally, setting flow rates is a nursing task.
Telephone or verbal order receipt (only for licensed professionals).
IV care (starting, maintaining, discontinuing IV lines).

Decision-Making Process for Accepting a Task

Confirm delegation: Did a licensed nurse specifically assign this task?
Check training: Have you been taught this skill in your CNA program?
Check facility policy: Does your workplace allow CNAs to perform this task?
Assess your own competency: Can you perform the task safely and correctly?
Evaluate patient stability: Is the patient’s condition appropriate for a CNA to perform this procedure?
If YES to all above, proceed. If NO to any, politely refuse and notify the nurse.

Risk Mitigation and Legal Safeguards

Risk of patient harm: Performing tasks beyond your scope (e.g., giving a medication) can lead to medication errors, infections, falls, or death.
Legal consequences: Practicing outside scope may result in criminal charges, fines, license revocation (for the nurse), or loss of CNA certification.
Professional boundary violations: Don’t accept tips, gifts, or try to provide care that is not assigned. Treat all patients equally.
Always communicate: If unsure about a task, stop and ask the supervising nurse. Never guess.
Document accurately: Only record care you personally provided. Never chart for another person.

Test Day Strategies and Delegation Mnemonics

On the CNA exam, expect questions about which tasks are allowed vs. prohibited. Memorize the common prohibited tasks list (med admin, sterile procedures, assessment, care planning).
Remember the 5 Rights of Delegation (applied to the nurse delegating): Right task, right circumstance, right person, right direction/communication, right supervision/evaluation.^[3]
The CNA’s responsibility is to accept delegated tasks within their scope and competency, but the delegating nurse retains accountability for the outcome.
A classic test scenario: “The nurse asks the CNA to perform a catheterization. The CNA has been trained in catheterization in class. What should the CNA do?” → The CNA cannot do it because it is outside the CNA scope of practice for most states and often requires a licensed nurse. The correct answer is to refuse politely and explain it’s beyond the CNA’s legal role.
Use the mnemonic “DO NOT MEDS” to recall prohibited tasks: D – Diagnose, O – Oxygen (setting rates), N – No sterile procedures, O – Orders (receiving telephone orders), T – Tubes (inserting/removing), M – Medications, E – Evaluate (assessments), D – Document (for others), S – Supervise (CNAs don’t supervise others).

References & Sources

Centers for Medicare & Medicaid Services (CMS). State Operations Manual – Appendix PP – Guidance to Surveyors for Long Term Care Facilities. CMS.gov. Accessed 2023. https://www.cms.gov/medicare/provider-enrollment-and-certification/guidanceforlawsandregulations/downloads/appendix-pp-state-operations-manual.pdf
National Council of State Boards of Nursing (NCSBN). 2023 Nursing Assistant Certification Guidelines. NCSBN.org. https://www.ncsbn.org/
Hartman's Nursing Assistant Care: Long-Term Care and Home Health. 4th Edition. Hartman Publishing; 2022. Chapter 1: The Nursing Assistant in Long-Term Care. ISBN: 978-1-60425-145-7. https://hartmanpublishing.com/PDF%20samples/COMBO4.pdf
Berman A, Snyder S, Frandsen G. Fundamentals of Nursing. 11th Edition. Pearson; 2021. Chapter 7: Legal Dimensions of Nursing Practice. https://www.studocu.com/en-us/document/baton-rouge-community-college/fundamentals-of-nursing/chapter-7-notes/21103584