G31.84
BillableMild cognitive impairment of uncertain or unknown etiology
Mild cognitive impairment of uncertain or unknown etiology
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Mild cognitive disorder NOS
- Mild neurocognitive disorder of uncertain or unknown etiology
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- •age related cognitive declineR41.81
- •altered mental statusR41.82
- •cerebral degenerationG31.9
- •cerebrovascular diseasesI60-I69
- •change in mental statusR41.82
- •cognitive deficits following (sequelae of) cerebral hemorrhage or infarction, , , , ,I69.01, I69.11, I69.21, I69.31, I69.81, I69.91
- •cognitive impairment due to intracranial or head injuryS06
- •dementia, ,F01, F02, F03
- •mild neurocognitive disorder due to a known physiological conditionF06.7
- •neurologic neglect syndromeR41.4
- •personality change, nonpsychoticF68.8
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •Reye's syndromeG93.7
Use Additional Code
Additional codes that should follow this code
- •code, if applicable, for codes , , to identify:G31.0-G31.83, G31.85-G31.9
- •dementia with anxiety, A4, B4, C4)F02.84, F02, F02, F02
- •dementia with behavioral disturbance, A1-, B1-, C1-)F02.81, F02, F02, F02
- •dementia with mood disturbance, A3, B3, C3)F02.83, F02, F02, F02
- •dementia with psychotic disturbance, A2, B2, C2)F02.82, F02, F02, F02
- •dementia without behavioral disturbance, A0, B0, C0)F02.80, F02, F02, F02
- •mild neurocognitive disorder due to known physiological conditionF06.7
- code to identify presence of:
- •alcohol abuse and dependenceF10
- •exposure to environmental tobacco smokeZ77.22
- •history of tobacco dependenceZ87.891
- •hypertensionI1A)I10
- •occupational exposure to environmental tobacco smokeZ57.31
- •tobacco dependenceF17
- •tobacco useZ72.0
Related Codes(7)
Also Known As / Clinical Terms(37)
SNOMED CT
UMLS
- Cognitive Impairment, MildC1270972
- Cognitive Impairments, MildC1270972
- Cognitive impairment, mildC1270972
- Cognitive impairment, mild,C1270972
- Impairment, Mild CognitiveC1270972
- Impairments, Mild CognitiveC1270972
- MCIC1270972
- Mild Cognitive ImpairmentC1270972
- Mild Cognitive ImpairmentsC1270972
- Mild cognitive disorderC1270972
- Mild cognitive disorder NOSC1270972
- Mild cognitive impairmentC1270972
- Mild cognitive impairment of uncertain or unknown etiologyC5675008
- Mild neurocognitive disorder of uncertain or unknown etiologyC5676456
Clinical Terms
- Neurocognitive disorder
- Mild cognitive disorder
- Cognitive Impairments, Mild
- Amnestic mild cognitive disorder
- Impairment, Mild Cognitive
- Mild cognitive disorder NOS
- Cognitive Impairment, Mild
- Cognitive impairment, mild,
- aMCI - amnestic mild cognitive impairment
- Impairments, Mild Cognitive
- Cognitive disorder due to disorder
- MCI
- Mild neurocognitive disorder of uncertain or unknown etiology
- Mild Cognitive Impairment
- Mild Cognitive Impairments
- Mild neurocognitive disorder
Frequently Asked Questions
What is the ICD-10 code for mild cognitive impairment of uncertain or unknown etiology?
The ICD-10-CM code for mild cognitive impairment of uncertain or unknown etiology is G31.84. The full clinical description is "Mild cognitive impairment of uncertain or unknown etiology". G31.84 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code G31.84 mean?
ICD-10-CM code G31.84 represents “Mild cognitive impairment of uncertain or unknown etiology”. It is classified under Chapter 6: Diseases of the Nervous System and is a billable/specific code that can be used on a claim.
Is G31.84 a billable code?
Yes, G31.84 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G31.84 in?
G31.84 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G31.84?
G31.84 has Excludes1 notes indicating codes that cannot be used together with it, including: age related cognitive decline (R41.81); altered mental status (R41.82); cerebral degeneration (G31.9); and 8 more.
Are additional codes required with G31.84?
Yes, when using G31.84, also report: code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:; dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4); dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-); dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3); dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2); dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0); mild neurocognitive disorder due to known physiological condition (F06.7-); presence of:; alcohol abuse and dependence (F10.-); exposure to environmental tobacco smoke (Z77.22); history of tobacco dependence (Z87.891); hypertension (I10-I1A); occupational exposure to environmental tobacco smoke (Z57.31); tobacco dependence (F17.-); tobacco use (Z72.0).
What SNOMED CT codes does G31.84 map to?
G31.84 maps to 3 SNOMED CT concepts: 836301008, 709073001, 386805003. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G31.84?
G31.84 is linked to 3 UMLS Concept Unique Identifiers: C1270972, C5675008, C5676456. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G31.84 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like mild cognitive impairment of uncertain or unknown etiology affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of G31.84?
There is no direct ICD-11 mapping available for G31.84 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.