The necessity of developing a two-stage qualification in ICD-11

Area of Science:

• Psychiatry
• Medical Classification Systems
• Clinical Diagnostics

Background:

• The International Classification of Diseases, 10th Revision (ICD-10) integrates atheoretical natural classification with nosological commitment.
• This dual approach presents challenges in practical implementation and diagnostic certainty.

Purpose of the Study:

• To propose a two-stage qualification process for enhancing diagnostic accuracy within the ICD-10 framework.
• To reconcile the principles of natural classification and nosological specificity in psychiatric diagnostics.

Main Methods:

• Implementing a first stage of narrative, syndromological qualification to identify the psychotic level of disorders.
• Conducting a second stage of nosological qualification based on comprehensive clinical analysis.

Main Results:

• The proposed two-stage method allows for syndromic features to inform nosological classification in the second stage.
• This approach facilitates consideration of individual syndrome characteristics and expands diagnostic criteria.

Conclusions:

• The ICD-10 can serve as a foundation for nosological qualification when supplemented by syndromic analysis.
• This revised approach supports future ICD revisions, aligning statistical and research goals in psychiatric diagnostics.