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    v1.0.28
    OpenPayerBilling CodesTemporary National Codes (Non-Medicare)HCPCS hcpcs-s9484-crisis-intervention-mental-health-per-hour
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    HCPCS S9484: Crisis Intervention Mental Health Services, Per Hour

    HCPCS Level II code S9484 describes crisis intervention mental health services, billed per hour, typically delivered as time-based acute psychiatric intervention by qualified mental health professionals in community, outpatient clinic, mobile crisis, or facility-based settings; the service type is crisis intervention/acute mental health care and the typical site of service includes community or clinic-based crisis programs, mobile crisis teams, or emergency/behavioral health settings.

    For related coverage guidance, see recent payer policy updates: Fixed Wing Air Ambulance Transport, Air Ambulance, Ambulance Services (for New Mexico Only).

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 28-year-old patient is brought to the emergency department by family members after an acute suicidal crisis with escalating self-harm ideation following an interpersonal stressor. Triage nursing documents active ideation with intent but no imminent plan; the attending physician requests immediate crisis intervention mental health services. A behavioral health clinician (licensed clinical social worker or psychologist) provides an intensive, time-limited, face-to-face crisis intervention session in the ED for one hour to assess safety, de-escalate distress, develop a safety plan, coordinate collateral contacts, and arrange urgent outpatient or inpatient follow-up. Documentation includes presenting problem, mental status exam, risk assessment (suicidal/homicidal ideation), interventions provided (de-escalation techniques, safety planning, brief psychotherapy elements), time in face-to-face crisis intervention, disposition, and follow-up instructions.

    Typical workflow:

    • Patient arrival and medical clearance by ED staff.

    • Referral to behavioral health crisis team and assignment of a crisis clinician.

    • Crisis clinician conducts a focused assessment and documents the start and end times for crisis intervention services.

    • Clinician implements immediate interventions (safety planning, brief counseling, family engagement) and documents clinical rationale for the level of service provided.

    • Care coordination with inpatient psychiatry, community crisis services, or scheduled outpatient follow-up, as indicated.

    • Billing staff codes the session using S9484 with appropriate modifiers reflecting unusual circumstances or multiple providers, and links the service to the appropriate ICD-10 diagnosis documenting the psychiatric crisis.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    99284Emergency department visit, problem of high severityOften performed prior to or concurrent with S9484 for medical evaluation and stabilization before behavioral crisis intervention.
    90833Psychotherapy with evaluation and management service, 30 minutesMay be performed when psychotherapy is delivered in addition to an E/M service; used when longer or additional psychotherapy elements are billed alongside crisis intervention.
    90791Psychiatric diagnostic evaluation (no medical services)Used when a comprehensive psychiatric diagnostic evaluation is performed to establish diagnoses that guide crisis disposition; may precede or follow crisis intervention.
    99406Smoking and tobacco use cessation counseling (intermediate)

    Related Modifiers

    6 rows

    ModifierDescriptionWhen to Use
    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…
    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…
    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…
    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…
    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
    106H00000XMarriage & Family TherapistA marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related menta…
    103T00000XPsychologistA psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, a…
    1041C0700XClinical Social WorkerA social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of p…
    101Y00000XCounselorA provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and …
    363L00000XNurse Practitioner(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision mak…
    332BC3200XCustomized Equipment (DME)Suppliers · Durable Medical Equipment & Medical Supplies
    1744G0900XGraphics DesignerOther Service Providers · Specialist
    163WX0800XOrthopedic Registered NurseNursing Service Providers · Registered Nurse

    Related ICD-10-CM Codes

    30 rows

    ICD-10-CM CodeDescription
    F11.20Opioid dependence, uncomplicated
    F12.20Cannabis dependence, uncomplicated
    F15.20Other stimulant dependence, uncomplicated
    F19.10Other psychoactive substance abuse, uncomplicated
    F32.9Major depressive disorder, single episode, unspecified
    F33.1Major depressive disorder, recurrent, moderate
    F41.0Panic disorder [episodic paroxysmal anxiety]
    F41.1Generalized anxiety disorder
    F41.9Anxiety disorder, unspecified
    F43.10Post-traumatic stress disorder, unspecified

    Showing 1–10 of 30

    Related Payer Policy Updates

    Specialty: Emergency & Medical Transportation1 / 3

    10 rows

    PolicyPayerEffective Date
    Fixed Wing Air Ambulance TransportCigna2026-08-15
    Air AmbulanceAmbetter Georgia2026-08-01
    Ambulance Services (for New Mexico Only)UnitedHealthcare2026-08-01
    Ambulance Services (for Tennessee Only)UnitedHealthcare2026-08-01
    Clinical Policy: Air AmbulanceArizona Complete Health2026-08-01
    Air AmbulanceCentene2026-08-01
    Clinical Policy: Air AmbulanceCentene2026-08-01
    Clinical Policy: Air AmbulanceAmbetter Nevada2026-08-01
    Ambulance TransportProvidence Health Plan2026-07-01
    Air ambulance transport coverage criteriaeocco2026-07-01

    Related Codes

    HCPCS-LEVEL-II-S2152-SOLID-ORGAN-TRANSPLANTATION-GLOBAL-CARE

    HCPCS Level II S2152: Solid Organ Procurement and Transplantation

    HCPCS-LEVEL-II-S2266-INDUCED-ABORTION-29-TO-31-WEEKS

    HCPCS Level II S2266: Induced Abortion, 29 to 31 Weeks

    HCPCS-LEVEL-II-S3630-EOSINOPHIL-COUNT-BLOOD-DIRECT

    HCPCS Level II S3630: Eosinophil Count, Blood, Direct

    HCPCS-LEVEL-II-S4017-INCOMPLETE-ART-CYCLE-CANCELLED-PRIOR-TO-STIMULATION

    HCPCS Level II S4017: Incomplete Cycle — Cancelled Prior to Stimulation

    HCPCS-LEVEL-II-S8055-ULTRASOUND-GUIDANCE-MULTIFETAL-REDUCTION-TC

    HCPCS Level II S8055: Ultrasound Guidance for Multifetal Pregnancy Reduction

    HCPCS-LEVEL-II-S8940-EQUESTRIAN-HIPPOTHERAPY-PER-SESSION

    HCPCS Level II S8940: Equestrian/Hippotherapy, Per Session

    HCPCS-LEVEL-II-S9024-PARANASAL-SINUS-ULTRASOUND

    HCPCS Level II S9024: Paranasal Sinus Ultrasound

    HCPCS-LEVEL-II-S9366-HOME-TPN-1-2L-PER-DAY-HOME-INFUSION

    HCPCS Level II S9366: Home Infusion TPN, 1–2 L/day

    HCPCS-LEVEL-II-S9446-GROUP-PATIENT-EDUCATION-NON-PHYSICIAN

    HCPCS S9446: Patient Education, Non-Physician Provider, Group, Per Session

    HCPCS-LEVEL-II-S9451-EXERCISE-CLASS-NON-PHYSICIAN-SESSION

    HCPCS S9451: Exercise Classes, Non-Physician Provider, Per Session

    Showing 1–10 of 532

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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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    Example of a brief behavioral intervention code that may be used for comorbid behavioral counseling in the same episode of care when clinically indicated.
    G0396Alcohol and/or substance (other than tobacco) screeningSubstance use screening may accompany crisis intervention when substance use contributes to the crisis and impacts disposition.