G8665 HCPCS Shoulder FS Benchmarks & Policy

HCPCS Level II code G8665 is used to document a risk-adjusted residual score for shoulder functional status that was not measured because the patient did not complete the functional status survey near discharge and was deemed not appropriate to complete it. Nationally, this code supports standardized reporting of missing functional outcome data and helps payers and facilities distinguish between omissions due to workflow issues versus clinically appropriate exclusions. Clear use of G8665 affects quality measurement, reimbursement reporting, and outcome benchmarking across post-acute and rehabilitation settings.

Key payers discussed in this overview include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find context on the clinical rationale for documenting unmeasured shoulder functional status, implications for facility-level quality metrics, and how payers commonly treat functional status exceptions in reporting. The publication also outlines benchmarks and policy practices that affect reporting compliance and quality programs tied to functional outcome measures. Data not available in the input is noted where applicable.

Billing Code Overview

HCPCS Level II code G8665 denotes a risk-adjusted functional status change residual score for shoulder impairment not measured because the patient did not complete the functional status survey near discharge, patient not appropriate. This code indicates that a shoulder functional status score could not be obtained and that omission is attributable to the patient being not appropriate to complete the survey.

Service type: Functional status assessment exception / outcome measurement reporting

Typical site of service: Inpatient or facility-based rehabilitation, skilled nursing facility, or other post-acute care settings where functional status surveys are administered near discharge.

Data not available in the input.

Clinical Context

A 68-year-old patient with a recent hospital admission for a proximal humerus fracture is enrolled in a functional status outcome program. At admission the patient completed the required functional status (FS) survey measuring shoulder-related activities. Near discharge, the patient is unavailable to complete the FS survey due to cognitive decline and delirium; the treating rehabilitation clinician documents that the patient is not appropriate for discharge FS assessment. The clinical workflow captures this circumstance by assigning billing code G8665 to indicate a risk-adjusted functional status change residual score for the shoulder impairment was not measured because the patient did not complete the FS status survey near discharge and the patient was not appropriate for testing.

Typical Site of Service: Inpatient rehabilitation facility, skilled nursing facility, acute care hospital with rehabilitation services, or home health where functional status tracking is required.
Common clinical workflow steps:
Admission FS survey administered and baseline shoulder function documented.
Ongoing therapy provided with documentation of interventions for shoulder impairment.
Planned discharge FS survey attempted near discharge; patient found unable or clinically inappropriate to complete survey (e.g., delirium, severe cognitive impairment, medical instability).
Clinician documents rationale and assigns G8665 to indicate a missing, risk-adjusted residual score for shoulder impairment.

Coding Specifications

Modifier	Description	When to Use
`24`	Unrelated evaluation and management service by the same physician during a postoperative period	When an unrelated E/M occurs during the same episode but not directly tied to the FS measurement process
`25`	Significant, separately identifiable E/M service on the same day	When a separate E/M is provided the day the discharge assessment is attempted and documented separately from FS assessment
`57`	Decision for surgery	When surgical decision-making occurs during the same encounter that affects appropriateness of discharge FS testing
`52`	Reduced services	When the discharge functional status testing was partially attempted but not completed
`GA`	Waiver of liability statement on file (Medicare)	When patient refuses or is unable to complete assessment and facility has an advance waiver or exception documented
`GQ`	Telehealth via asynchronous store-and-forward (not typically applicable)	Rare use when portions of FS data are collected via asynchronous remote tools but discharge survey incomplete
`GT`	Via interactive audio and video telecommunication systems	When FS assessment attempts were made via telehealth and not completed due to patient inability
`95`	Synchronous telemedicine service rendered via real-time interactive audio and video	Similar to `GT` for payer-specific uses
`59`	Distinct procedural service	When another distinct service occurred that justifies separate reporting alongside documentation of the incomplete FS survey
`QS`	Monitored anesthesia care service by an assistant (QX/QS family)	Uncommon; used only if anesthesia/monitoring affected ability to complete discharge testing

Taxonomy Code	Specialty	Notes
`207P00000X`	Physical Therapist	Primary clinician performing functional status evaluations and shoulder outcome measures
`208100000X`	Physical Medicine & Rehabilitation (Physiatrist)	Physician overseeing inpatient rehab programs and FS outcome reporting
`2086S0105X`	Occupational Therapist	Performs shoulder-related ADL assessments and discharge functional status surveys
`261QM2300X`	Home Health Agency (Clinical Manager)	Clinicians coordinating FS assessments for home health patients
`251B00000X`	Rehabilitation Facility	Administrative taxonomy for facilities responsible for outcome reporting

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`M75.100`	Unspecified rotator cuff tear or rupture of right shoulder, not specified as traumatic	Common shoulder pathology leading to functional impairment tracked by FS surveys
`M75.101`	Unspecified rotator cuff tear or rupture of left shoulder, not specified as traumatic	As above, when left shoulder is affected and discharge FS would measure change
`S42.201A`	Fracture of unspecified part of right clavicle, initial encounter for closed fracture	Upper extremity fracture that impairs shoulder function and is tracked in rehabilitation outcomes
`S42.202A`	Fracture of unspecified part of left clavicle, initial encounter for closed fracture	As above for left-sided injuries
`M75.50`	Bursitis of unspecified shoulder	Causes pain and functional limitation; often included among diagnoses for shoulder FS measurement

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`97110`	Therapeutic exercises to develop strength and endurance, range of motion and flexibility	Common rehabilitation interventions performed during the episode; baseline FS obtained before/after these therapies
`97140`	Manual therapy techniques (e.g., mobilization/manipulation)	Interventions for shoulder impairment documented in the care plan that support FS tracking
`97112`	Neuromuscular reeducation of movement, balance, coordination, kinesthetic sense, posture, and proprioception	Therapy that aims to improve shoulder function; progress would ordinarily be captured by FS surveys
`97530`	Therapeutic activities, direct (one-on-one) patient contact to improve functional performance	Functional task training relevant to shoulder-related ADLs measured by FS surveys
`99457`	Remote physiologic monitoring treatment management services, clinical staff/physician/other qualified healthcare professional time	Used when remote monitoring supports functional assessment efforts; may be part of attempts to collect FS data

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Summary & Overview

HCPCS G8665: Shoulder Functional Status Not Measured, Patient Not Appropriate