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    v1.0.28
    OpenPayerBilling CodesNational Codes Established for State Medicaid AgenciesHCPCS hcpcs-t2034-crisis-intervention-waiver-per-diem
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    HCPCS T2034: Crisis Intervention Waiver, Per Diem

    HCPCS Level II code T2034 describes a per diem crisis intervention service provided through a waiver program, representing daily coverage for short-term crisis stabilization and support services; service type is crisis intervention (waiver) and the typical site of service is community- or home-based settings where waiver-funded behavioral health or social support is delivered.

    For related coverage guidance, see recent payer policy updates: Interferential Stimulation Devices (for home use), Prior Authorization for Durable Medical Equipment (DME), Breast Pumps.

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    Table of contents

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    • Billing CodesCPT, HCPCS, DRG & more
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    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.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    90791Psychiatric 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.
    90839Psychotherapy for crisis, first 60 minutesUsed when a separate billed crisis psychotherapy session is provided in addition to waiver per diem supports; documents intensive face-to-face therapeutic work.
    90840Psychotherapy for crisis, each additional 30 minutesBilled when crisis psychotherapy extends beyond the initial time unit and is distinct from per diem support activities.
    99204Office or other outpatient visit for new patient, moderate severityMay be used for a comprehensive outpatient medical evaluation when the crisis results in a new patient encounter requiring detailed assessment.
    99324Domiciliary, rest home, or custodial care visit, initialApplicable when crisis per diem services occur in a group residential or short-term supported living setting and a domiciliary visit is billed separately.
    G9928Mobile 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.

    Related Modifiers

    8 rows

    ModifierDescriptionWhen to Use
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    23Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    54Modifier ‑54 (“Surgical care only”) is appended to a CPT surgical procedure when the reporting surgeon performs the intraoperative (surgical) component but does not furnish the preoperative and/or…- Use modifier -54 when the reporting surgeon provided only the intraoperative (surgical) component of a procedure and preoperative and/or postoperative management has been or will be provided by…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…
    56Modifier ‑56 indicates the reporting provider furnished only the preoperative management for a surgical procedure and did not perform the intraoperative or postoperative care. It is used in…- Use Modifier -56 when a provider performs only the preoperative management in a split‑care situation (one physician manages preop care while a different physician performs the intraoperative…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    101Y00000XCounselorA provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and …
    2084P0800XPsychiatry PhysicianA Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, …
    367A00000XAdvanced Practice MidwifeAdvanced practice midwifery encompasses the independent provision of care during pregnancy, childbirth, and the postpartum period; sexual and reproduc…
    171M00000XCase Manager/Care CoordinatorA person who provides case management services and assists an individual in gaining access to needed medical, social, educational, and/or other servic…
    2080P0203XPediatric Critical Care Medicine PhysicianA pediatrician expert in advanced life support for children from the term or near-term neonate to the adolescent. This competence extends to the criti…
    364S00000XClinical Nurse SpecialistA registered nurse who, through a graduate degree program in nursing, or through a formal post-basic education program or continuing education courses…
    341600000XAmbulanceAn emergency vehicle used for transporting patients to a health care facility after injury or illness. Types of ambulances used in the United States i…
    207V00000XObstetrics & Gynecology PhysicianAn obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproducti…

    Related ICD-10-CM Codes

    27 rows

    ICD-10-CM CodeDescription
    F11.10Opioid abuse, uncomplicated
    F11.20Opioid dependence, uncomplicated
    F19.10Other psychoactive substance abuse, uncomplicated
    F19.20Other psychoactive substance dependence, uncomplicated
    F20.9Schizophrenia, unspecified
    F31.4Bipolar disorder, current episode depressed, severe, without psychotic features
    F31.9Bipolar disorder, unspecified
    F32.1Major depressive disorder, single episode, moderate
    F32.9Major depressive disorder, single episode, unspecified
    F33.1Major depressive disorder, recurrent, moderate

    Showing 1–10 of 27

    Related Payer Policy Updates

    Specialty: Durable Medical Equipment (DME)1 / 2

    10 rows

    PolicyPayerEffective Date
    Interferential Stimulation Devices (for home use)Moda Health2026-10-01
    Prior Authorization for Durable Medical Equipment (DME)Blue Cross Blue Shield - Rhode Island2026-10-01
    Breast PumpsModa Health2026-09-01
    Personal Emergency Response SystemsCareSource Georgia2026-09-01
    Continuous Passive Motion (CPM) DevicesCigna2026-08-15
    Push-Rim Activated Power-Assist Device (E0986) — Manual Wheelchair Accessorymoda_health_plan_inc2026-08-13
    Beds and Mattresses (for Ohio Only)Colorado Rocky Mountain Health Plans2026-08-01
    Beds and Mattresses (for Kentucky Only)UnitedHealthcare2026-08-01
    Pneumatic Compression Devices (for Nebraska Only)UnitedHealthcare2026-08-01
    Indications for Coverage — Hospital beds, support surfaces, and safety enclosure beds (DME)Colorado Rocky Mountain Health Plans2026-08-01

    Related Codes

    HCPCS-LEVEL-II-T1030-NURSING-CARE-HOME-REGISTERED-NURSE-PER-DIEM

    HCPCS Level II T1030: Nursing Care in Home by Registered Nurse, Per Diem

    HCPCS-LEVEL-II-T2014-PREVOCATIONAL-HABILITATION-PER-DIEM

    HCPCS Level II T2014: Habilitation, Prevocational, Waiver; Per Diem

    HCPCS-LEVEL-II-T2020-DAY-HABILITATION-WAIVER-PER-DIEM

    HCPCS Level II T2020: Day Habilitation, Waiver; Per Diem

    HCPCS-LEVEL-II-T2047-HABILITATION-PREVOCATIONAL-WAIVER

    HCPCS Level II T2047: Habilitation Prevocational Waiver, per 15 minutes

    HCPCS-LEVEL-II-T4535-DISPOSABLE-INCONTINENCE-LINER-PAD

    HCPCS Level II T4535: Disposable Incontinence Liner/Pad

    HCPCS-LEVEL-II-T4538-REUSABLE-DIAPER-PER-DIAPER

    HCPCS Level II T4538: Reusable Diaper, Each

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

    HCPCS Level II T1000: Private Duty Licensed Nursing, up to 15 Minutes

    HCPCS-T1001-NURSING-ASSESSMENT-EVALUATION

    HCPCS Level II T1001: Nursing Assessment/Evaluation

    HCPCS-T1002-RN-SERVICES-15-MINUTES

    HCPCS T1002: RN Services, Up to 15 Minutes

    HCPCS-T1003-LPN-LVN-SERVICES-15-MINUTES

    HCPCS Level II T1003: LPN/LVN Services, Up to 15 Minutes

    Showing 1–10 of 113

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    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.
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