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Medical Error

Classify a preventable failure of a planned clinical action—commission, omission, wrong plan, or correct plan executed incorrectly—whether or not harm results, and analyze it through the care process and defenses that allowed it or caught it.

Core Idea

A medical error is a preventable failure in planning or executing clinical care: the wrong plan is chosen, the right plan is carried out incorrectly, or a required action is omitted. Harm need not occur; near misses and intercepted failures preserve the error even when defenses prevent injury. It requires a clinical intention or standard, a deviation in planning or execution, preventability under the relevant conditions, and a care-process locus. Outcome severity, negligence, and culpability are separate judgments.

Scope of Application

Diagnostic, surgical, transfusion, communication, device, and monitoring cases share the structure because all are parts of clinical care. Removing clinical intention, patient exposure, and standard-of-care context leaves generic mistake or failure.

Clarity

An adverse event is an unfavorable clinical occurrence with causality still open. A preventable adverse event is harm caused by error. Complication can occur despite appropriate care. Medication error is one clinical-process subtype.

Manages Complexity

The abstraction turns a scattered family of cases into one role-based test: identify the required elements, test their relation, and reject the classification when a constitutive commitment is missing.

Abstract Reasoning

Use the structural signature rather than the label, then challenge the nearest counterexample. A correctly executed, appropriately selected treatment that causes an unforeseeable reaction is an adverse outcome but not, on that fact alone, a medical error.

Knowledge Transfer

Diagnostic, surgical, transfusion, communication, device, and monitoring cases share the structure because all are parts of clinical care. Removing clinical intention, patient exposure, and standard-of-care context leaves generic mistake or failure.

Example

A case qualifies only when the definition and every load-bearing role remain present. A correctly executed, appropriately selected treatment that causes an unforeseeable reaction is an adverse outcome but not, on that fact alone, a medical error.

Relationships to Other Abstractions

Local relationship map for Medical ErrorParents appear above the current abstraction, mutual partners to the right, and children below. Node labels state whether each abstraction is prime or domain-specific; colors identify relation types.Medical ErrorDOMAINPrime abstraction: Swiss Cheese Model (Layered Defense with Aligning Holes) — is a decomposition of, typicalSwiss Cheese Mo…PRIMEDomain-specific abstraction: Medication Error — is a kind ofMedication ErrorDOMAIN

Current abstraction Medical Error Domain-specific

Parents (1) — more general patterns this builds on

Children (1) — more specific cases that build on this

  • Medication Error Domain-specific is a kind of Medical Error

    Medication Error is a strict specialization of Medical Error.

Hierarchy paths (25) — routes to 9 parentless roots

Not to Be Confused With

An adverse event is an unfavorable clinical occurrence with causality still open. A preventable adverse event is harm caused by error. Complication can occur despite appropriate care. Medication error is one clinical-process subtype.

Notes

(Canonical first draft; queued for Claude house-style re-authoring and citation review.)