SOAP Note

tool · medicine · doctrinal-institutional

Subjective, Objective, Assessment, Plan — structured clinical documentation.

The SOAP Note is the structured clinical documentation framework articulated by Dr. Lawrence L. Weed in his foundational 1968 New England Journal of Medicine paper 'Medical Records that Guide and Teach' (Part 1 and Part 2) and substantially developed in his 1969 book Medical Records, Medical Education, and Patient Care. Weed's broader 'problem-oriented medical record' (POMR) framework substantially restructured medical documentation around patient problems rather than chronological narrative, with the SOAP note providing the format for documenting individual patient encounters within the POMR framework. The four sections: (1) Subjective — patient's reported symptoms, history, concerns; what the patient says about their condition; (2) Objective — observable, measurable findings from examination and tests; what the clinician observes and measures; (3) Assessment — clinician's diagnostic reasoning, differential diagnosis, problem list; what the clinician concludes; (4) Plan — diagnostic and therapeutic actions, follow-up, patient education; what the clinician will do next. The framework substantially transformed clinical documentation by providing systematic structure that made medical records useful for clinical care, education, communication among providers, and quality review. SOAP notes are foundational to contemporary clinical documentation across medicine, nursing, physical therapy, occupational therapy, mental health, and other clinical disciplines. Variants include APSO (Assessment-Plan-Subjective-Objective, putting clinical reasoning first for efficiency), SOAPER (adding Education and Response/Review), and electronic-health-record adaptations that often impose structured fields but follow SOAP organization. The framework has been substantially complicated by EHR-era documentation: copy-forward functionality, billing-code-driven documentation, and 'note bloat' have produced SOAP notes that meet structural requirements without substantive clinical communication. Weed's original vision of documentation that guides and teaches has been substantially eroded by financial and regulatory pressures on documentation.

Originators

Lawrence L. Weed (foundational); subsequent broad clinical adoption with substantial variants; intellectual antecedents in earlier military and medical record-keeping traditions high

Year / Decade

1968 (Weed foundational NEJM papers); 1969 (Medical Records, Medical Education, and Patient Care book); ongoing development high

Primary sources

Weed, L.L. (1968). 'Medical Records That Guide and Teach', New England Journal of Medicine, Weed, L.L. (1969). Medical Records, Medical Education, and Patient Care, subsequent clinical-education textbooks and electronic-health-record guidance, Frassica, J.J. (2005). 'Frequency of Laboratory Test Misinterpretation' (substantial subsequent quality literature) high

Core components

Four sections: Subjective, Objective, Assessment, Plan
Connection to broader Problem-Oriented Medical Record (POMR)
Application across medicine, nursing, allied health, mental health
Variants: APSO, SOAPER
Foundation for contemporary clinical documentation
Connection to electronic health records
Recent challenges from EHR-era documentation pressures (copy-forward, billing codes, note bloat)
Distinction from chronological-narrative medical records
Pedagogical role in clinical education globally

Primary use case

Foundational clinical documentation framework across medicine, nursing, allied health, mental health globally; basis for clinical record-keeping, communication among providers, billing documentation, quality review; reference framework in clinical education globally; foundation for substantial electronic health record design; integration with broader clinical workflow; pedagogical foundation in essentially every clinical curriculum; influence on clinical reasoning education (forcing systematic separation of observation from interpretation); foundation for some commercial documentation and clinical-decision-support tools.

Common criticisms

EHR-era documentation has substantially eroded SOAP note's clinical-communication function — copy-forward functionality produces notes with substantial repetitive content unrelated to current encounter, billing-code-driven documentation prioritizes regulatory and financial requirements over clinical communication, 'note bloat' (substantially expanded note length without proportional information increase) substantially limits actual readability
commercial EHR vendors have created SOAP-structured fields that often impose structure without substantive clinical communication
clinician-time pressure substantially limits time available for thoughtful documentation, producing template-driven notes
integration with clinical reasoning has been substantially eroded — many SOAP notes don't substantively reflect clinical reasoning despite the Assessment section's intent
the framework's pedagogical durability sometimes exceeds its current clinical utility — students learn SOAP structure but practicing clinicians often produce notes that don't substantively follow it
cross-clinical-discipline application varies — the SOAP framework works better for physician encounters than for nursing, mental-health, or other clinical contexts that may have substantively different documentation needs
tendency for SOAP notes to be defensive documentation (protecting against malpractice) rather than substantive clinical communication
integration with patient access to records (US 21st Century Cures Act open notes) has produced substantial reconsideration of SOAP framing — clinicians write differently when patients will read notes
the framework's American medicolegal context shapes specific commitments that don't transfer cleanly to other healthcare systems.

Lineage

Siblings: Differential Diagnosis, Clinical Reasoning