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ICD11

Symptoms, signs or clinical findings, not elsewhere classified (R00–R99)

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Symptoms, signs or clinical findings, not elsewhere classified is a chapter in ICD-11 that includes clinical manifestations and abnormal findings that indicate a possible health condition but cannot be assigned to a more specific disease category. These entries represent patient-reported symptoms, observable signs, or diagnostic findings that may occur alone or in association with a wide range of underlying disorders.

This chapter covers diverse presentations such as pain, fatigue, abnormal laboratory results, and unexplained physical findings. Classification within this chapter supports accurate documentation, clinical assessment, and further diagnostic evaluation, while also enabling consistent reporting, research, and health system analysis when a definitive diagnosis has not yet been established.

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Frequently asked questions

This chapter includes symptoms, signs, and abnormal findings when no definitive diagnosis has been established.

It is used when a patient presents with symptoms but a specific disease diagnosis is not yet determined.

It includes pain, fatigue, abnormal laboratory results, and other clinical observations.

Clear guidance helps ensure symptom codes are used only when appropriate and not as substitutes for confirmed diagnoses.

Yes. Once a definitive diagnosis is established, the condition should be coded accordingly.

It supports clinical documentation, healthcare analysis, and appropriate use of diagnostic services.

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