G9648 HCPCS Reimbursement & Policy Benchmarks | OpenPayer

Summary & Overview

HCPCS G9648: 90-Day mRS Greater Than 2 Outcome Assessment

HCPCS Level II code G9648 identifies patients with a modified Rankin Scale (mRS) score greater than 2 at 90 days, indicating moderate to severe functional limitation after a neurological event. Nationally, standardized reporting of 90‑day mRS outcomes supports quality measurement, care coordination between acute and post‑acute settings, and value‑based payment models that track functional recovery.

Key payers included in this overview are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of what the code represents, the typical service contexts in which it is used (outpatient follow‑up, post‑acute rehabilitation), and how it ties to outcome measurement for stroke and other disabling conditions.

This publication summarizes benchmarks and reporting considerations relevant to G9648, highlights policy and billing implications tied to documented functional status at 90 days, and provides clinical context about using the 90‑day mRS as a quality metric. Data not provided in the input are noted as unavailable; the content focuses on descriptive, coding, and administrative implications for national payers and providers.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareG9648HCPCS Level IImodified Rankin Scale90-day outcomesfunctional assessmentpost-acute carestroke outcomesquality measurement

Billing Code Overview

HCPCS Level II code G9648 denotes patients with a 90 day mRS score greater than 2. This code reflects a clinical status assessment using the modified Rankin Scale (mRS) at the 90-day post-event interval.

Service type: Functional outcome assessment and documentation at 90 days post-event
Typical site of service: Outpatient clinic, post-acute follow-up visit, or rehabilitation facility

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A typical patient is a 68-year-old stroke survivor who completed acute and subacute care and is seen at a 90-day post-stroke clinic visit for functional outcome assessment. The patient has persistent moderate-to-severe disability with dependence for some activities of daily living. The clinician (neurologist, stroke specialist, or PM&R physician) performs the modified Rankin Scale (mRS) structured interview and documents a 90-day mRS score greater than 2 (indicating at least moderate disability). The clinical workflow includes: initial chart review of the index stroke hospitalization, timed interview to obtain the mRS score, documentation of findings in the progress note, reconciliation of medications and secondary prevention measures, and communication of the outcome to the patient, family, and the primary care team. The documented G9648 code is used for reporting the population-level quality or outcome metric of patients with a 90-day mRS >2 as part of stroke program reporting or quality measurement processes. Typical site of service is an outpatient clinic (stroke follow-up clinic, neurology clinic, or rehabilitation clinic).

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when documentation supports substantially greater work or time for the assessment visit due to complexity beyond typical post-stroke assessment.

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HCPCS-G9156-WHEELCHAIR-EVALUATION-FACE-TO-FACE-PHYSICIAN

HCPCS G9156: Evaluation for Wheelchair, Face-to-Face Physician

HCPCS-G8410-FOOTWEAR-EVALUATION-DOCUMENTED

HCPCS G8410: Footwear Evaluation Performed and Documented

HCPCS-G8777-DIABETES-SCREENING-TEST

HCPCS G8777: Diabetes Screening Test Performed

HCPCS-G9965-MISSED-WELL-CHILD-VISIT-PRIMARY-CARE

HCPCS G9965: Missed Well-Child Visit with Primary Care Provider

HCPCS-G9411-CIED-INFECTION-DEVICE-REMOVAL-OR-REVISION-NOT-ADMITTED-180-DAYS

HCPCS G9411: CIED Infection Requiring Device Removal or Surgical Revision

HCPCS-G9661-COLONOSCOPY-AGE-86-PLUS-DIAGNOSTIC-SURVEILLANCE

HCPCS G9661: Colonoscopy for Patients Aged 86 and Older

HCPCS-G8770-URINE-PROTEIN-TEST-RESULT-DOCUMENTED-REVIEWED

HCPCS G8770: Urine Protein Test Result Documented and Reviewed

HCPCS-G0018-PSYCHOTHERAPY-CRISIS-ADDITIONAL-30-MINUTES-NON-OFFICE

HCPCS G0018: Psychotherapy for Crisis, Additional 30 Minutes

HCPCS-G2167-NECK-IMPAIRMENT-RESIDUAL-SCORE-NEGATIVE

HCPCS G2167: Neck Impairment Residual Score (< 0)

Showing 1–10 of 1996

Taxonomy Code	Specialty	Notes
`2084P0800X`	Neurology	Neurologists commonly perform 90-day post-stroke outcome assessments and mRS scoring.
`261QM0800X`	Physical Medicine & Rehabilitation	PM&R physicians perform functional outcome evaluations and rehabilitation follow-up.
`207RG0300X`	Internal Medicine (Hospitalist/General Neurology follow-up)	Internists or hospitalists may conduct clinic-based stroke follow-up visits.
`367A00000X`	Nurse Practitioner	Nurse practitioners in stroke clinics often perform structured outcome assessments including mRS scoring.
`363L00000X`	Physician Assistant	Physician assistants frequently document 90-day functional status under appropriate supervision.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I63.9`	Cerebral infarction, unspecified	Representative of ischemic stroke leading to functional disability assessed by mRS at 90 days.
`I61.9`	Intracerebral hemorrhage, unspecified	Hemorrhagic stroke resulting in post-acute disability measured by 90-day mRS.
`I69.398`	Other sequelae of cerebral infarction	Used for late effects and persistent deficits contributing to elevated mRS scores at 90 days.
`G45.9`	Transient cerebral ischemic attack, unspecified	TIAs may progress or be associated with residual deficits requiring outcome assessment.
`Z86.73`	Personal history of transient ischemic attack (TIA) and cerebral infarction	History codes relevant to risk stratification and follow-up where 90-day functional status is tracked.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99214`	Office or other outpatient visit for the evaluation and management of an established patient, typically 25 minutes	Common billing code for a comprehensive outpatient follow-up visit during which a 90-day mRS is assessed and documented.
`99354`	Prolonged physician service in the office or other outpatient setting, first hour (direct patient contact)	Used when the post-stroke assessment requires extended time beyond typical E/M visit, supporting prolonged services documentation.
`97110`	Therapeutic exercises to develop strength and endurance, range of motion and flexibility	Often performed during the rehabilitation workflow following identification of functional deficits at 90 days.
`97530`	Therapeutic activities, direct (one-on-one) patient contact, each 15 minutes	Used for activity-based therapy prescribed after a 90-day functional assessment showing disability.
`99406`	Smoking and tobacco use cessation counseling, intermediate, greater than 3 minutes up to 10 minutes	Example of a secondary prevention counseling service that may be delivered during the 90-day follow-up visit.
`99495`	Transitional care management services with moderate medical decision complexity, face-to-face within 14 days of discharge	May be part of the broader care pathway related to post-stroke follow-up when transitional care services are billed.

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