Summary & Overview

HCPCS G9910: Institutional SNP and Long-Term Care Residency, Age 66+

HCPCS Level II code G9910 designates beneficiaries age 66 and older who are enrolled in institutional special needs plans (SNPs) or who have resided in long-term care facilities with place-of-service codes 32, 33, 34, 54, or 56 for more than 90 consecutive days during the measurement period. Nationally, this code supports identification and stratification of older adults in institutional settings for quality measurement, care coordination, and program eligibility determinations. It matters for payers and providers because it flags a high-need, high-utilization population that can drive resource allocation and specialized care pathways.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find contextual information on the clinical population represented by G9910, the typical sites of service, and the administrative purpose of the code. The publication outlines what to expect in benchmarking and policy-related discussion for institutional SNP and long-term care populations, notes common scenarios where the code is applied, and summarizes gaps where input data are not available.

Data not available in the input: specific modifiers usage patterns, associated taxonomies, ICD-10 diagnosis lists, related billing codes, and detailed service-line specifications.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareG9910HCPCS Level IIlong-term careinstitutional special needs planSNPgeriatric carequality measurementcare coordination

Billing Code Overview

HCPCS Level II code G9910 identifies patients aged 66 or older who are either enrolled in institutional special needs plans (SNPs) or residing in long-term care with place-of-service codes 32, 33, 34, 54, or 56 for more than 90 consecutive days during the measurement period.

Service type: Long-term care residency / institutional SNP enrollment monitoring
Typical site of service: Institutional long-term care settings (skilled nursing facilities, nursing facilities, custodial long-term care), and institutional special needs plan environments

Data not available in the input for modifiers, associated taxonomies, ICD-10 diagnoses, related codes, and service line.

Clinical & Coding Specifications

Clinical Context

Typical Patient Scenario:

An 82-year-old female member of an institutional special needs plan (SNP) has resided in a long-term care facility with place of service code 32 for 120 consecutive days during the measurement year. She is enrolled in Medicare and the facility documents ongoing chronic care needs, medication management, and care coordination services overseen by a primary care practitioner who performs periodic assessments and communicates with facility nursing staff.

Clinical Workflow:

On admission to the facility and periodically thereafter, the attending clinician reviews eligibility and documents length of stay and plan enrollment to determine measure inclusion for quality reporting.
Facility administrative staff verify continuous residency of more than 90 days using facility records and assign place of service code 32, 33, 34, 54, or 56 as appropriate in claims submissions.
The clinician documents assessment encounters, chronic condition management, advance care planning, and care coordination in the medical record to support quality measurement and billing.
Claims for services rendered to this beneficiary include the HCPCS Level II code G9910 to identify patients age 66 or older in institutional SNPs or long-term care who meet the >90-day residency criterion during the measurement period.
Payer adjudication uses G9910 for quality and population health reporting; supporting documentation of residency duration and plan enrollment is retained in the medical record and facility administrative files.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased Procedural Services	Use when services involve substantially greater work than typical, documented in record and appropriate for intensive assessments in frail long-term care residents.
`23`	Unusual Anesthesia	Use when an unusual circumstance requires anesthesia for a service that normally does not require it in a long-term care setting.
`52`	Reduced Services	Use when a service is partially reduced or not completed but still reported; document reasons (e.g., resident intolerance).
`53`	Discontinued Procedure	Use when a procedure is terminated due to patient instability or other urgent clinical reason.
`54`	Surgical Care Only	Use when only the surgical portion is provided and postoperative care is transferred; applicable if facility-based procedures are billed separately.
`55`	Postoperative Management Only	Use when only postoperative care is provided following a facility procedure for a resident.
`56`	Preoperative Management Only	Use when only preoperative evaluation is provided prior to a procedure in the facility.
`62`	Two Surgeons	Use when two surgeons work together as primary surgeons on the same procedure for a complex case in the facility.
`AS`	Physician Assistant, Nurse Practitioner, or Clinical Nurse Specialist Services for Medicare Beneficiaries	Use when services are furnished by an assistant-at-surgery or when advanced practitioners provide care under Medicare rules in the facility.
`QX`	CRNA Service With Medical Direction by a Physician	Use when a certified registered nurse anesthetist provides anesthesia under the medical direction of a physician in facility-based procedures.

Taxonomy Code	Specialty	Notes
`207Q00000X`	Family Medicine	Primary care clinicians who manage chronic care for long-term care residents and document eligibility for `G9910`.
`208D00000X`	Geriatric Medicine	Specialists who provide age-focused assessments and coordinate complex care for institutionalized elderly patients.
`208000000X`	Internal Medicine	Hospitalists and primary internists providing ongoing management in long-term care and documenting qualifying residency and plan enrollment.
`363L00000X`	Nursing Facility Medicine (SNF)	Clinicians specializing in skilled nursing facility care who frequently manage the population identified by `G9910`.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`Z59.0`	Homelessness	Not directly typical for long-term care residents; included for context in broader social determinants screening when documenting place of residence (not usually applicable to `G9910`).
`Z74.3`	Need for continuous supervision	Relevant for long-term care residents requiring supervision; supports documentation of ongoing care needs during the residency period.
`Z91.19`	Patient's noncompliance with other medical treatment and regimen	May be documented when adherence issues affect care planning in institutionalized elderly patients.
`Z72.0`	Tobacco use	Common comorbidity addressed in long-term care and relevant to preventive counseling during visits associated with `G9910`.
`Z66`	Do not resuscitate status	Often documented in long-term care records and advance care planning discussions for residents meeting `G9910` criteria.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99304`	Initial nursing facility care, typically 30 minutes at bedside	Often used for initial assessments when a patient first resides in a long-term care facility and documentation supports `G9910` inclusion.
`99307`	Subsequent nursing facility care, typically 25 minutes	Used for periodic follow-up visits for chronic condition management in long-term care residents eligible for `G9910` measurement.
`99318`	Observation or inpatient care discharge day management; discharge day management	Used when discharging long-term care residents to another level of care; documentation can support continuous residency determinations.
`99406`	Smoking and tobacco use cessation counseling, intermediate, 3-10 minutes	Example of preventive counseling that may be provided to long-term care residents during billed visits associated with care captured by `G9910`.
`99497`	Advance care planning including the explanation and discussion of advance directives	Frequently performed in long-term care settings and documented in the medical record for residents meeting criteria captured by `G9910`.