What is the ICD-10-CM code for cognitive impairment?

The primary ICD-10-CM code for cognitive impairment is G31.84 (Mild cognitive impairment of uncertain or unknown etiology). There are 16 billable cognitive impairment codes in FY2027, covering different types and underlying causes.

How many ICD-10-CM codes are there for cognitive impairment?

There are 18 ICD-10-CM codes for cognitive impairment in the FY2027 tabular list, of which 16 are billable. These codes fall under Chapter 18 of the ICD-10-CM classification.

Which chapter covers cognitive impairment in ICD-10-CM?

Cognitive Impairment codes are classified in Chapter 18 of the ICD-10-CM tabular list: R00–R99 (Symptoms, Signs and Abnormal Clinical and Laboratory Findings).

Cognitive Impairment ICD-10-CM codes

ICD-10-CM codes for cognitive impairment, including mild cognitive impairment (MCI), age-related cognitive decline, and specific cognitive deficits such as attention and executive function deficits.

18 codes, 16 billable. FY2027, valid from October 1, 2026. In chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings.

How to code Cognitive Impairment

G31.84 is mild cognitive impairment of uncertain or unknown etiology. When MCI is due to a known physiological condition, such as a stroke or Parkinson disease, it is coded as mild neurocognitive disorder F06.70 (without behavioral disturbance) or F06.71 (with behavioral disturbance), with the underlying condition coded first.

R41.81 is age-related cognitive decline (senility not otherwise specified). Specific deficits are coded from R41.84-: R41.840 attention and concentration deficit, R41.841 cognitive communication deficit, R41.842 visuospatial deficit, R41.843 psychomotor deficit, and R41.844 frontal lobe and executive function deficit. R41.89 and R41.9 cover other and unspecified cognitive symptoms.

Cognitive impairment is not the same as dementia. Once the provider diagnoses dementia, use F03.- (unspecified dementia, such as F03.90) or the specific type, for example G30.9 with F02.- for Alzheimer disease. See the dementia guide for the severity and behavior characters.

All Cognitive Impairment codes

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