ICD-9-CM Diagnosis Code 780.93 : Memory loss.
Mild cognitive impairment, so stated G31. 84 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2022 edition of ICD-10-CM G31. 84 became effective on October 1, 2021.
ICD-10 code R41. 9 for Unspecified symptoms and signs involving cognitive functions and awareness is a medical classification as listed by WHO under the range - Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified .
Neurocognitive disorder is a general term that describes decreased mental function due to a medical disease other than a psychiatric illness. It is often used synonymously (but incorrectly) with dementia. The major areas of the brain have one or more specific functions.