Public/Community Health Nursing Scope of Practice, Core Competencies, and Function

Core Concepts

Scope of practice: the legal fence

In the US, nursing scope is established by state law — each state's nurse practice act and board regulations define what LPN/LVNs, RNs, and APRNs may do. Scope generally includes assessment, nursing diagnosis, planning, intervention, evaluation, health teaching, and delegation, but details vary by state: the activities an LPN may perform under an RN's supervision, the rules for delegating to unlicensed assistive personnel, and APRN prescriptive authority are all state-specific. Institutional policy may be more restrictive than state law but never less. Outside the US, each country's nursing law and regulators define scope. The takeaway: a nurse's legal authority is whatever current law and employer policy authorize in the place and time of practice.

Standards of practice and professional performance

Professional organizations translate scope into standards. In the US, the American Nurses Association (ANA) publishes scope and standards documents, including for public health nursing; other countries have equivalents. These typically contain two parts: standards of practice, describing the nursing process in the specialty — assessment, diagnosis, outcomes identification, planning, implementation, evaluation — applied at the population level; and standards of professional performance, describing expected behaviors such as ethics, culturally congruent practice, communication, collaboration, leadership, education, evidence-based practice and research, quality, resource utilization, and environmental health.

Standards are the yardstick for competence: nurses are accountable to them through licensing boards, employers, and courts, and they are updated periodically — so nurses consult current editions.

Core competencies: what a public health nurse must be able to do

Competency frameworks identify the knowledge, skills, and attitudes of the specialty. In the US, the most influential is the Quad Council Coalition's public health nursing competencies (continued under the APHA Public Health Nursing Section). Its domains include analytic/assessment skills (interpreting community health data), policy development/program planning, communication, cultural competency, community dimensions of practice, public health sciences (epidemiology, biostatistics), financial planning and management, and leadership and systems thinking.

Frameworks are revised periodically and versions differ — treat any framework as a snapshot and check the current edition when it matters. The exam-relevant idea: competencies span domains from data analysis to policy advocacy, not just clinical tasks.

Function: what public health nurses actually do

Core functions include community assessment (profiling the community's health, needs, and assets); planning population-based interventions with the community; implementation of direct services (immunization clinics, screening events, home visits, health teaching) and indirect services (program coordination, coalition building, outreach); case finding and referral (identifying at-risk individuals and linking them to services); case management (coordinating care for complex needs); advocacy (working for policies and resources that improve community health); evaluation (measuring group-level outcomes); and collaboration (with schools, agencies, community organizations).

The Intervention Wheel: a model of population-based practice

A widely used teaching model is the Intervention Wheel (developed by Keller and colleagues at the University of Minnesota), organizing practice along two dimensions:

• Three levels of practice: individual/family, community, and systems.
• Seventeen interventions — including surveillance, outreach, screening, case finding, referral and follow-up, case management, health teaching, counseling, collaboration, coalition building, community organizing, advocacy, social marketing, and policy development/enforcement.

The wheel's key lesson: the same intervention can be delivered at different levels. Health teaching can target a person (teaching one patient), a community (a public campaign), or a system (training all staff in a school district). Population-based practice is defined by which level the intervention aims at — and effective community health nursing usually works at all three levels at once.

Common Confusions