HCPCS G8664: Shoulder Residual Impairment Score < 0 - OpenPayer

Summary & Overview

HCPCS G8664: Shoulder Residual Impairment Score < 0

HCPCS Level II code G8664 denotes a completed residual shoulder impairment score that is less than zero. Nationally, codes that capture impairment scoring outcomes are used for clinical documentation, functional status reporting, and administrative tracking of patient recovery or decline. Accurate use of G8664 supports standardized records for shoulder impairment assessments and can influence care coordination, quality measurement, and payer adjudication workflows.

Key payers referenced in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for impairment scoring, how G8664 is used in documentation, common sites of service where the code is reported, and a summary of payer coverage patterns and benchmarks where available. The publication also outlines coding relationships and reporting considerations relevant to impairment outcome capture.

This summary provides national-level context for clinicians, clinical coders, and policy analysts seeking clear information about the purpose and reporting implications of G8664. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareG8664HCPCS Level IIshoulder impairmentimpairment scoringoutcome reportingoutpatient rehabilitationclinical documentationfunctional statusbilling guidance

Billing Code Overview

HCPCS Level II code G8664 indicates a residual score for the shoulder impairment successfully calculated and the score was less than zero (< 0). This code documents the outcome of an impairment scoring process for the shoulder where the calculated residual impairment score falls below zero.

Service Type: Assessment/Impairment Scoring

Typical Site of Service: Outpatient clinic or rehabilitation setting

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 58-year-old right-handed patient presents to an outpatient orthopedics clinic 6 months after a rotator cuff repair with persistent pain and limited range of motion. The treating clinician performs a standardized shoulder outcome assessment (e.g., Constant-Murley score or another validated residual impairment scoring tool) to quantify residual impairment. The calculation yields a negative residual score (score < 0), indicating improvement beyond baseline impairment or a measurement result that falls below the scoring floor. Documentation in the medical record includes: the validated score used, raw component values, the method of calculation, date of assessment, comparison to prior scores, and interpretation that the residual score was successfully calculated and was less than zero. The service is typically reported by the clinician who completes and interprets the functional scoring during an outpatient visit or specialty physical therapy/rehabilitation session. Typical site of service: outpatient orthopedic clinic, specialty rehabilitation clinic, or physical therapy facility. Typical patient scenario: postoperative or post-injury shoulder patient undergoing follow-up functional assessment to document residual impairment and guide ongoing conservative care decisions.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when work required to calculate or document the residual shoulder score is substantially greater than usually required (must be well-documented).

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Showing 1–10 of 1996

Taxonomy Code	Specialty	Notes
207XS0101X	Orthopedic Surgery	Orthopedic surgeons commonly order and interpret shoulder impairment scores during follow-up.
2080P0207X	Physical Medicine & Rehabilitation	PM&R physicians perform functional assessments and document residual impairment scores.
261QM0800X	Physical Therapist	Physical therapists commonly administer validated shoulder outcome measures and record scores.
163WP0800X	Occupational Therapist	Occupational therapists perform shoulder functional assessments focused on activities of daily living.
363L00000X	Physician Assistant	Physician assistants working in orthopedics or rehab may perform and document the scoring.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`M75.1`	Rotator cuff tear or rupture, not specified as traumatic	Common cause of shoulder impairment and frequent indication for postoperative or follow-up functional scoring.
`M75.100`	Unspecified rotator cuff tear or rupture of unspecified shoulder	Specific rotator cuff pathology often evaluated with shoulder outcome measures.
`M75.0`	Adhesive capsulitis of shoulder	Shoulder stiffness and pain leading to residual impairment measured by scoring tools.
`M25.511`	Pain in right shoulder	Symptom code used when assessing functional limitation and scoring residual impairment.
`S43.431A`	Superior glenoid labrum lesion of right shoulder, initial encounter	Labral injuries can cause long-term shoulder impairment assessed by residual scoring.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`97110`	Therapeutic exercises to develop strength, endurance, range of motion and flexibility (per 15 minutes)	Commonly performed in physical therapy sessions before or after assessing residual shoulder impairment; documents functional rehabilitation interventions.
`97112`	Neuromuscular reeducation of movement, balance, coordination, kinesthetic sense, posture, and proprioception (per 15 minutes)	May be provided as part of the rehabilitation plan guided by the residual score.
`97035`	Ultrasound therapy (each 15 minutes)	Modalities used in conservative shoulder management that may accompany functional assessments during visits.
`99214`	Office or other outpatient visit for the evaluation and management of an established patient, moderate complexity	Typical E/M visit code used when the clinician documents assessment, scoring, and management plan for a shoulder impairment.
`99457`	Remote evaluation of recorded video and/or images submitted by an established patient, including interpretation and report	May be used when a validated score is calculated from remotely submitted functional data or clinician review of remote assessments.

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