Loading...

    Explore
    • Policy Monitoring
    • Live Policy Feed
    • Billing Codes
    • NPI Medicare & Medicaid
    • Healthcare Providers
    • Health Insurance Payers
    • States
    • Service Lines
    • Taxonomy Codes
    Lookup tools
    • Billing Code Lookup
    • CPT Modifier Lookup
    • Provider Taxonomy Code Lookup
    • Healthcare Provider & Facility Lookup
    • Health Insurance Payer Lookup
    • Payer Contact Directory

    Policy & Benchmark Tools

    • Prior Authorization Lookup
    • Coverage Criteria Lookup
    • Timely Filing Lookup
    • Billing Code Reimbursement Rates
    • Payer Comparison Dashboard
    • Facility Comparison Dashboard
    • All tools

    Company

    • About OpenPayer
    • Data Sources
    • Trek Health
    OpenPayerby Trek Health
    LinkedInYouTube

    © 2026 Trek Health. All rights reserved.

    OpenPayer is built and maintained by Trek Health.

    v1.0.28
    OpenPayerBilling CodesProcedures / Professional ServicesHCPCS hcpcs-g8991-therapy-primary-functional-limitation-goal-status
    Ask Trek AI about this page

    HCPCS G8991: Other Therapy Primary Functional Limitation, Projected Goal Status

    HCPCS Level II code G8991 reports an other physical or occupational therapy primary functional limitation with documented projected goal status at the start of a therapy episode, at designated reporting intervals, and at discharge or end of reporting; this code applies to therapy services (physical or occupational) typically delivered in outpatient therapy clinics, inpatient rehabilitation settings, or skilled nursing facilities where functional progress and goals are tracked across the episode of care.

    Customize your policy alerts

    Sign up for hcpcs G8991 policy alerts

    Get alerted when payer policies referencing G8991 are released or updated.

    Monitor payer policy activity

    Receive email alerts as soon as relevant payer policies are published or updated.

    Table of contents

    Progress1 / 6

    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
    • Prior AuthorizationPA policies by payer & drug
    • Timely FilingFiling deadlines by payer
    • Coverage CriteriaMedical necessity by payer
    • Payer ContactsClaims, PA & appeals contacts
    View all tools

    Clinical & Coding Specifications

    Clinical Context

    A typical patient scenario involves an adult who is undergoing a physical or occupational therapy episode for a functional limitation not captured by standard primary limitation codes. Example: a 68-year-old patient post-hip fracture surgically repaired who demonstrates a complex mix of mobility, balance, and endurance impairments that do not fit a single primary functional limitation category. At the initial evaluation the therapist documents the primary functional limitation, projects a measurable goal status for the therapy episode outset, and records baseline function. The therapist repeats standardized functional status reporting at established reporting intervals (for example, at the midpoint of the episode and at discharge) and documents the projected goal status at discharge or end of reporting. Clinical workflow: initial evaluation and goal-setting visit; periodic progress assessments tied to episode intervals; ongoing therapy sessions (physical or occupational) addressing the composite limitation; interim documentation of changes in functional status; and a discharge evaluation summarizing achieved status versus projected goal. The billing code G8991 is used to report the primary functional limitation category classified as “other” when the patient’s main functional deficit does not align with the standard CMS-defined primary limitation categories.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    97110Therapeutic exercises to develop strength and endurance, range of motion and flexibility (per 15 minutes)Commonly billed during the therapy episode to address strength/endurance deficits identified in the primary functional limitation and documented alongside functional status reporting.
    97112Neuromuscular reeducation of movement, balance, coordination, kinesthetic sense, posture, and proprioception (per 15 minutes)Often performed for patients with balance and coordination impairments; progress documented in interval reporting tied to G8991.
    97116Gait training (includes stair climbing) (per 15 minutes)Used when mobility and gait deficits are part of the primary functional limitation; functional goals and discharge status are reported with G8991.
    97530Therapeutic activities, direct (one-on-one) patient contact, using dynamic activities to improve functional performance (per 15 minutes)Occupational or physical therapy intervention targeting ADL or IADL deficits that correspond to the primary functional limitation reported with G8991.
    97750Physical performance test or measurement (e.g., musculoskeletal, functional capacity), with written report, per standardized testUsed for formal functional assessments that establish baseline and follow-up measurements referenced in G8991 reporting.

    Related Modifiers

    5 rows

    ModifierDescriptionWhen to Use
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    225100000XPhysical TherapistPhysical therapists (PTs) are licensed health care professionals who diagnose and treat individuals of all ages, from newborns to the very oldest, who…
    225200000XPhysical Therapy Assistant(1)Physical therapist assistants are skilled health care providers who are graduates of a physical therapist assistant associate degree program accred…
    261QP2300XPrimary Care Clinic/CenterAmbulatory Health Care Facilities · Clinic/Center
    2080P0208XPediatric Infectious Diseases PhysicianA pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific know…
    283X00000XRehabilitation HospitalA hospital or facility that provides health-related, social and/or vocational services to disabled persons to help them attain their maximum functiona…
    261QL0400XLithotripsy Clinic/CenterAmbulatory Health Care Facilities · Clinic/Center
    207WX0110XPediatric Ophthalmology and Strabismus Specialist Physician PhysicianAn ophthalmologist who specializes in pediatric ophthalmology and strabismus management. The subspecialty includes the medical and surgical management…
    163WC1400XCollege Health Registered NurseNursing Service Providers · Registered Nurse

    Related ICD-10-CM Codes

    25 rows

    ICD-10-CM CodeDescription
    E11.65Type 2 diabetes mellitus with hyperglycemia
    F32.9Major depressive disorder, single episode, unspecified
    F33.1Major depressive disorder, recurrent, moderate
    G12.21Amyotrophic lateral sclerosis
    I69.322Dysarthria following cerebral infarction
    I69.391Dysphagia following cerebral infarction
    M16.11Unilateral primary osteoarthritis, right hip
    M16.12Unilateral primary osteoarthritis, left hip
    M17.11Unilateral primary osteoarthritis, right knee
    M17.12Unilateral primary osteoarthritis, left knee

    Showing 1–10 of 25

    Related Codes

    HCPCS-G9490-HOME-ASSESSMENT-NON-HOMEBOUND

    HCPCS G9490: Home Visit Patient Assessment for Non-Homebound Beneficiary

    HCPCS-G0008-INFLUENZA-VACCINE-ADMINISTRATION

    HCPCS G0008: Administration of Influenza Virus Vaccine

    HCPCS-G0009-PNEUMOCOCCAL-VACCINE-ADMINISTRATION

    HCPCS G0009: Administration of Pneumococcal Vaccine

    HCPCS-G0010-HEPATITIS-B-VACCINE-ADMINISTRATION

    HCPCS G0010: Administration of Hepatitis B Vaccine

    HCPCS-G0011-PREP-COUNSELING-HIV-RISK-REDUCTION-ADHERENCE

    HCPCS G0011: Individual PrEP Counseling, HIV Risk Assessment

    HCPCS-G0012-PRE-EXPOSURE-PROPHYLAXIS-INJECTION-HIV-PREVENTION

    HCPCS G0012: Injection of PrEP Drug for HIV Prevention

    HCPCS-G0013-PREP-INDIVIDUAL-COUNSELING-HIV-RISK-REDUCTION

    HCPCS G0013: Individual PrEP Counseling by Clinical Staff

    HCPCS-G0017-PSYCHOTHERAPY-CRISIS-FIRST-60-MINUTES-NON-OFFICE

    HCPCS G0017: Psychotherapy for Crisis, First 60 Minutes

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

    HCPCS G0018: Psychotherapy for Crisis, Additional 30 Minutes

    HCPCS-G0019-COMMUNITY-HEALTH-INTEGRATION-SDOH-CARE-COORDINATION

    HCPCS G0019: Community Health Integration, Person-Centered Assessment

    Showing 1–10 of 1996

    • More pages

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
    Published by

    Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.