Summary & Overview

CPT 1491F: Dementia, Moderate Severity

CPT code 1491F documents a clinician’s diagnosis of dementia with a classification of moderate severity. Nationally, standardized severity coding supports care coordination, care planning, and quality measurement for patients with cognitive impairment. This code signals clinically significant deficits — including trouble concentrating, memory decline, and the need for assistance with major activities — that commonly prompt specialty referrals and multidisciplinary management.

Key payers referenced in typical analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find context on the clinical meaning of the code, typical sites of service where documentation occurs, and the role such severity designations play in quality metrics and care pathways. The publication outlines what is known about billing and documentation practices, identifies where input data are unavailable, and summarizes implications for national reporting and care coordination efforts. This resource is intended to help clinical, coding, and policy teams understand the purpose of CPT code 1491F and how it fits into broader dementia care documentation and measurement frameworks.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 1491Fdementiaseverity classificationcognitive assessmentoutpatient behavioral healthquality measurementcare coordinationgeriatric neurologyclinical documentation

Billing Code Overview

CPT code 1491F indicates that a provider has diagnosed a patient with dementia and classified the condition as moderate severity. The description notes symptoms such as difficulty concentrating, decreased memory, and the need for assistance with major activities.

Service type: Cognitive/behavioral assessment and diagnostic classification for dementia

Typical site of service: Outpatient clinic or ambulatory behavioral health setting, including memory clinics and neurology or geriatric specialty practices.

Data not available in the input for payers, modifiers, taxonomies, ICD-10 mappings, related codes, and service line.

Clinical & Coding Specifications

Clinical Context

An 80-year-old patient presents to a memory disorders clinic with progressive forgetfulness, difficulty concentrating, and increasing need for assistance with instrumental and some basic activities of daily living. The clinician completes a focused cognitive evaluation, documents a diagnosis of dementia and classifies it as moderate severity based on observed deficits in memory, executive function, and reports from the caregiver that the patient requires assistance for major activities (e.g., managing finances, medication administration, meal preparation). The clinical workflow includes: initial history from patient and caregiver, mental status testing (e.g., MoCA or MMSE), functional assessment, medication and comorbidity review, discussion with family/caregiver about safety and care needs, and formal documentation of the dementia diagnosis and severity (moderate) in the medical record. The encounter may occur in an outpatient neurology clinic, geriatric medicine clinic, primary care office with cognitive services, or a multidisciplinary memory care program. Typical visit activities documented are cognitive testing results, functional assessment, treatment plan or care coordination referrals, and coding of the dementia diagnosis with severity classification for billing and quality reporting using 1491F.

Coding Specifications

Modifier	Description	When to Use
`25`	Significant, separately identifiable evaluation and management service by the same physician on the same day of the procedure

Taxonomy Code	Specialty	Notes
`103K00000X`	Neurology	Neurologists commonly diagnose and manage dementia and assign severity
`207R00000X`	Geriatric Medicine	Geriatricians perform cognitive and functional assessments for older adults
`208000000X`	Family Medicine	Family physicians often evaluate and manage dementia in primary care
`207L00000X`	Internal Medicine	Internists provide diagnosis and longitudinal management of dementia
`363L00000X`	Neuropsychology	Neuropsychologists perform detailed cognitive testing supporting severity classification

ICD-10 Code	Description	Clinical Relevance
`F03.90`	Unspecified dementia, without behavioral disturbance	Common code used when dementia is diagnosed and behavioral disturbance is not specified; supports documentation of severity
`F03.91`	Unspecified dementia, with behavioral disturbance	Used when dementia includes behavioral or psychological symptoms affecting care and safety
`G30.9`	Alzheimer's disease, unspecified	Frequently associated with dementia diagnoses and used when Alzheimer pathology is suspected but unspecified
`F02.80`	Dementia in other diseases classified elsewhere without behavioral disturbance	Used when dementia is secondary to another diagnosed condition and behavioral issues are absent
`F02.81`	Dementia in other diseases classified elsewhere with behavioral disturbance	Used when dementia secondary to another condition includes behavioral symptoms affecting management

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`96116`	Neurobehavioral status exam, per hour of the psychologist's or physician's time	Used for extended cognitive or behavioral assessments when more detailed testing supports dementia severity classification
`96132`	Neuropsychological testing evaluation services (e.g., for neurocognitive testing), first hour	Used when formal neuropsychological evaluation is performed to document cognitive deficits and severity
`99483`	Assessment and care planning for patients with cognitive impairment, requiring moderate to high complexity clinical decision making	Often performed in conjunction with dementia diagnosis and severity classification to document care planning needs
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Common E/M level used for follow-up visits documenting dementia status and care needs
`99304`	Initial nursing facility care, per day, for the evaluation and management of a resident	Used when dementia diagnosis and severity assessment occur in a long-term care setting

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