HCPCS T2034: Crisis Intervention, Waiver Per Diem - OpenPayer

Summary & Overview

HCPCS T2034: Crisis Intervention, Waiver Per Diem

HCPCS Level II code T2034 represents per diem billing for waiver-funded crisis intervention services. This code is used to capture daily rates for crisis intervention provided in community or home settings as part of waiver programs that support individuals with urgent behavioral health or social needs. Nationally, accurate use of T2034 matters for program accountability, payment consistency, and tracking of crisis service utilization across payer types.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of how T2034 is categorized, typical service settings, and which payers commonly cover waiver-based crisis intervention services. The publication outlines benchmarks where available, summarizes relevant policy and billing considerations affecting per diem waiver services, and provides clinical context for when crisis intervention per diem billing is likely to apply.

The analysis is intended for billing managers, policy analysts, and clinical program directors seeking clarity on coding and payer coverage for waiver-based crisis intervention. Data not available in the input is noted where applicable, and the content focuses on national-level implications rather than state-specific program rules.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareT2034HCPCS Level IIcrisis interventionwaiver servicesper diem billingbehavioral healthhome-based servicesbilling and codingpayment policy

Billing Code Overview

HCPCS Level II code T2034 describes crisis intervention services provided under a waiver program, billed on a per diem basis. The service type is crisis intervention, waiver and the typical site of service is community- or home-based crisis intervention settings where waiver-funded supports are delivered on a daily rate. Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A typical patient scenario involves an adult enrolled in a Home- and Community-Based Services waiver who is experiencing an acute behavioral health crisis related to severe mental illness or a developmental disability. The patient exhibits escalating risk of harm to self or others, severe agitation, or loss of community functioning that cannot be managed with routine outpatient care. Crisis intervention waiver per diem services coded with T2034 are provided as a comprehensive, multidisciplinary daily service to stabilize the individual in the community or in a temporary supported setting.

Services commonly include intensive behavioral supports, crisis assessment, safety planning, short-term counseling, care coordination with primary care and behavioral health providers, medication monitoring (when authorized), and linkage to ongoing community-based services. Typical workflow: referral from emergency services, primary care, behavioral health clinic, or family; same-day or next-day crisis assessment by a licensed clinician or mobile crisis team; initiation of per diem crisis supports under the waiver with daily documentation of interventions and progress; regular interdisciplinary team review; transition planning to ongoing outpatient or waiver supports once stabilized. Typical sites of service are community-based settings, the patient’s residence, respite or short-term supported housing arranged under the waiver, or mobile crisis team visits in non-clinical environments.

Coding Specifications

Modifier	Description	When to Use

Related Codes

HCPCS-T4541-DISPOSABLE-LARGE-UNDERPAD

HCPCS T4541: Disposable Large Incontinence Underpad, Each

HCPCS-T4530-PEDIATRIC-DISPOSABLE-INCONTINENCE-BRIEF-LARGE

HCPCS Level II T4530: Pediatric Disposable Incontinence Brief, Large Size

HCPCS-T4539-REUSABLE-INCONTINENCE-DIAPER-BRIEF

HCPCS Level II T4539: Reusable Incontinence Diaper/Brief, Each

HCPCS-T2032-RESIDENTIAL-CARE-WAIVER-MONTHLY

HCPCS T2032: Residential Care Waiver, Per Month

HCPCS-T2015-HABILITATION-PREVOCATIONAL-PER-HOUR

HCPCS T2015: Habilitation Prevocational Services, Per Hour

HCPCS-T2001-NON-EMERGENCY-TRANSPORTATION-PATIENT-ESCORT

HCPCS Level II T2001: Non-Emergency Transportation, Patient Attendant

HCPCS-T1004-NURSING-AIDE-15-MINUTE-SERVICE

HCPCS T1004: Services of a Qualified Nursing Aide, up to 15 Minutes

HCPCS-T1029-COMPREHENSIVE-LEAD-INVESTIGATION-RESIDENCE

HCPCS T1029: Comprehensive Environmental Lead Investigation, Per Dwelling

HCPCS-T4542-DISPOSABLE-UNDERPAD-SMALL-SIZE

HCPCS Level II T4542: Disposable Incontinence Underpad, Small

HCPCS-T1000-PRIVATE-DUTY-LICENSED-NURSING-15-MIN

HCPCS T1000: Private Duty Licensed Nursing, 15-Minute Units

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Taxonomy Code	Specialty	Notes
101Y00000X	Psychiatry & Neurology	Psychiatrists often oversee crisis intervention plans and medication management.
2084P0800X	Clinical Social Worker	Clinical social workers frequently provide crisis counseling, care coordination, and safety planning.
1835S0002X	Mental Health Counselor	Licensed professional counselors deliver behavioral interventions and stabilization supports.
367A00000X	Family Medicine	Primary care physicians may initiate referrals and coordinate medical aspects during crisis.
1744P0800X	Nursing — Psychiatric/mental health	Psychiatric nurses provide medication monitoring and clinical nursing support during per diem crisis services.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`F32.0`	Major depressive disorder, single episode, mild	Depression with acute worsening can precipitate a community crisis requiring per diem stabilization.
`F32.2`	Major depressive disorder, single episode, severe without psychotic features	Severe depression frequently necessitates intensive crisis supports under a waiver.
`F33.1`	Major depressive disorder, recurrent, moderate	Recurrence with functional decline often triggers crisis intervention services to prevent hospitalization.
`F41.1`	Generalized anxiety disorder	Severe anxiety with functional impairment may be stabilized through crisis per diem interventions.
`F43.10`	Post-traumatic stress disorder, unspecified	PTSD exacerbations can result in acute crisis needing intensive community-based supports.
`F90.0`	Attention-deficit hyperactivity disorder, predominantly inattentive type	Behavioral dysregulation in adults or adolescents with comorbid conditions may require crisis management.
`F84.0`	Autistic disorder	Individuals with autism experiencing behavioral crises benefit from waiver per diem interventions tailored to developmental needs.
`F84.9`	Pervasive developmental disorder, unspecified	Developmental disorders with acute behavioral escalation commonly use crisis waiver services for stabilization.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`90791`	Psychiatric diagnostic evaluation (no medical services)	Typically performed at intake or during crisis assessment to establish diagnosis and immediate treatment needs prior to or concurrent with initiation of `T2034` per diem services.
`90839`	Psychotherapy for crisis, first 60 minutes	Used when a separate billed crisis psychotherapy session is provided in addition to waiver per diem supports; documents intensive face-to-face therapeutic work.
`90840`	Psychotherapy for crisis, each additional 30 minutes	Billed when crisis psychotherapy extends beyond the initial time unit and is distinct from per diem support activities.
`99204`	Office or other outpatient visit for new patient, moderate severity	May be used for a comprehensive outpatient medical evaluation when the crisis results in a new patient encounter requiring detailed assessment.
`99324`	Domiciliary, rest home, or custodial care visit, initial	Applicable when crisis per diem services occur in a group residential or short-term supported living setting and a domiciliary visit is billed separately.
`G9928`	Mobile crisis unit service (example HCPCS/CPT varies by payer)	Often used by payors for discrete mobile crisis interventions that complement or precede a waiver per diem; use depends on payor rules and local coding guidance.