ICD-10-CM Book 2025 Edition
Chapters ICD-10-CM Book Table of Content /
chapter 18 R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified /
R40-R46 Symptoms and signs involving cognition, perception, emotional state and behavior /
R41 Other symptoms and signs involving cognitive functions and awareness
Billable ICD-10-CM Code R41.81
R41.81
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Age-related cognitive decline 
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Senility NOS
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