M1488 HCPCS Reimbursement & Policy

HCPCS Level II code M1488 designates patients who have received a dementia diagnosis in the year before or during the evaluation period. As a diagnostic flag used in clinical documentation and care management workflows, this code supports tracking of dementia prevalence, facilitates care planning, and informs quality measurement and resource allocation at a national level. The code is relevant across outpatient, primary care, neurology, geriatric, home health, and institutional settings where dementia evaluation and ongoing management occur.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code’s clinical context, typical sites of service, and its role in documenting dementia status. The publication summarizes common use cases for care coordination and quality reporting, highlights related billing and documentation considerations, and provides benchmarking and policy context where available. Data not available in the input is explicitly noted for absent fields such as specific modifiers, associated taxonomies, ICD-10 crosswalks, and related billing codes. This overview is intended for a national audience of clinicians, coding professionals, and policy analysts seeking a clear reference on HCPCS Level II code M1488 and its application in dementia care documentation.

Billing Code Overview

HCPCS Level II code M1488 identifies patients with a diagnosis for dementia in the year before or during the period of evaluation. This code is used to flag the presence of a dementia diagnosis for purposes of clinical documentation and population management.

Service type: Patient status/diagnosis flagging and care management documentation related to dementia
Typical site of service: Settings where dementia diagnosis and care evaluation occur, such as outpatient clinics, primary care offices, neurology practices, geriatric care settings, and institutional or home-based evaluations

Clinical Context

A 78-year-old patient with progressive memory loss and previously diagnosed Alzheimer disease presents for a comprehensive cognitive evaluation during a home health visit. The clinician documents the presence of dementia within the 12 months before or during the evaluation period, confirms current functional status, medication list, behavioral symptoms, and caregiver support. The workflow includes review of the medical history, medication reconciliation, mental status testing (e.g., Mini-Mental State Examination or Montreal Cognitive Assessment), assessment of safety and need for care coordination, and documentation of the dementia diagnosis to support population health reporting and chronic care management billing. Findings are recorded in the electronic medical record and shared with the primary care provider and family or caregiver as appropriate.

Coding Specifications

Modifier	Description	When to Use
`25`	Significant, separately identifiable evaluation and management service on the same day as another procedure	Use when an E/M visit for cognitive assessment is distinct from a same-day procedure
`59`	Distinct procedural service	Use when a separate diagnostic procedure or intervention is performed on the same day

Taxonomy Code	Specialty	Notes
`207Q00000X`	Family Medicine	Primary care clinicians commonly diagnose and manage dementia and perform cognitive evaluations
`207L00000X`	Internal Medicine	Internists provide longitudinal dementia care and coordinate specialists
`207RI0200X`	Geriatric Medicine	Geriatricians specialize in complex older adult care and dementia management
`2084P0800X`	Neurology	Neurologists diagnose and stage neurodegenerative dementias and interpret cognitive testing
`163W00000X`	Clinical Social Worker	Provides caregiver assessment, counseling, and care coordination in dementia care

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`F03.90`	Unspecified dementia, uncomplicated	Frequently used when dementia is diagnosed but subtyping is not performed or documented; supports dementia-focused evaluation and management
`F03.91`	Unspecified dementia with behavioral disturbance	Indicates dementia with behavioral symptoms that may require targeted assessment, safety planning, or caregiver support
`G30.9`	Alzheimer disease, unspecified	Common primary neurodegenerative cause of dementia; cognitive evaluation helps in staging and management
`F02.80`	Dementia in other diseases classified elsewhere without behavioral disturbance	Used when dementia is secondary to another neurologic or systemic condition and requires evaluation
`F02.81`	Dementia in other diseases classified elsewhere with behavioral disturbance	Reflects secondary dementia with behavioral symptoms influencing care planning

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99354`	Prolonged evaluation and management service, face-to-face, additional time beyond the usual service (add-on)	Used when extended cognitive assessment or care planning requires additional face-to-face time beyond the base E/M visit
`99483`	Assessment of and care planning for a patient with cognitive impairment, including caregiver education and coordination of care	Commonly performed for patients with dementia to document comprehensive care planning and support care management
`96116`	Neurobehavioral status exam, standardized; per hour	Used when formal neuropsychological testing or structured cognitive assessment is administered
`99341`	Home visit for the evaluation and management of a new patient	Applicable when dementia evaluation is performed in the home setting for a new patient
`99347`	Home visit for the evaluation and management of an established patient	Applicable when dementia follow-up evaluation is performed in the home setting for an established patient
`99490`	Chronic care management services, at least 20 minutes of clinical staff time directed by a physician or other qualified health professional, per calendar month	Used in ongoing management of patients with dementia requiring non-face-to-face care coordination and chronic care management services

Related CPT codes are commonly performed before, during, or after the cognitive evaluation to support diagnosis, staging, care planning, and ongoing management.

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Summary & Overview

HCPCS M1488: Dementia Diagnosis in Evaluation Period