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    v1.0.28
    OpenPayerBilling CodesAlcohol and Drug Abuse TreatmentHCPCS hcpcs-h2035-hourly-substance-use-disorder-treatment
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    HCPCS H2035: Alcohol and/or Other Drug Treatment Program, Per Hour

    HCPCS Level II code H2035 describes an alcohol and/or other drug treatment program billed per hour, representing hourly behavioral health services focused on assessment, counseling, therapy, and program-based treatment for substance use disorders typically delivered in outpatient treatment program settings or structured treatment facilities as an hourly treatment service.

    For related coverage guidance, see recent payer policy updates: Home Health, Skilled, and Custodial Care Services (for Idaho Only), Private Duty Nursing Services (for Florida Only), Private Duty Nursing Services.

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    National Reimbursement Benchmarks

    Across national commercial payers BUCA (average commercial) sits near the mid-market with an average rate of $48.10, providing a useful anchor against more variable carrier outcomes. Blue Cross Blue Shield exhibits the widest interquartile dispersion with P75−P25 = $37.70 ($59.60 − $22.90), indicating substantial variability among contracted rates, while Aetna shows one of the tightest IQRs at $7.00 ($63.00 − $56.00), reflecting relatively clustered reimbursement levels.

    UnitedHealth Group and Cigna fall between those extremes: UnitedHealth Group’s IQR is $33.20 ($61.70 − $32.50) and Cigna’s IQR is $21.90 ($54.40 − $31.50). BUCA’s IQR is $25.90 ($59.70 − $33.80). These comparisons highlight where commercial rate dispersion concentrates across payers without implying policy or billing actions.

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    National Payer Mean Reimbursement Rates

    State Reimbursement Rates

    State: Alaska1 / 51

    Rate by payer

    Clinical & Coding Specifications

    Clinical Context

    A 34-year-old patient with a history of opioid dependence presents for outpatient substance use disorder treatment. The patient is enrolled in an ambulatory alcohol and/or other drug treatment program that bills H2035 on an hourly basis for structured counseling and therapeutic services. Typical workflow: intake assessment by a licensed clinician (clinical social worker or addiction counselor) including diagnostic review and goal-setting; individualized counseling sessions (individual or group) billed per hour using H2035; medication management or coordination with a psychiatry & neurology physician when indicated; documentation of attendance, clinical interventions, progress toward treatment goals, and any medically necessary extended or complex services (which may require modifier reporting). Visits occur in an outpatient clinic or community behavioral health center; telehealth delivery may be provided when supported by payor policies and appropriate modifiers are appended.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    H2036Alcohol and/or other drug treatment program, per diemBilled when services are furnished and paid on a per‑day basis instead of hourly; may be used for full‑day residential or intensive outpatient billing.

    Related Modifiers

    9 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…
    95Modifier 95 indicates that a service was provided via synchronous, real‑time audio‑video telehealth rather than in‑person. Per CMS, AAPC and professional associations, append modifier 95 to claim…- Use modifier 95 to indicate a service was furnished via synchronous, real‑time audiovisual telehealth (a live audio‑video conference between patient and provider) rather than in‑person. - Pair…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    101YA0400XAddiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers · Counselor
    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 …
    2084P0800XPsychiatry PhysicianA Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, …
    2279P1004XPulmonary Diagnostics Registered Respiratory TherapistIncluded in the area of pulmonary diagnostics are the following; collection and analysis of physiological specimens, interpretation of physiological d…
    273R00000XPsychiatric Hospital UnitIn general, a distinct unit of a hospital that provides acute or long-term care to emotionally disturbed patients, including patients admitted for dia…
    207RC0000XCardiovascular Disease PhysicianAn internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threaten…

    Related ICD-10-CM Codes

    29 rows

    ICD-10-CM CodeDescription
    F10.10Alcohol abuse, uncomplicated
    F10.120Alcohol abuse with intoxication, uncomplicated
    F10.129Alcohol abuse with intoxication, unspecified
    F10.20Alcohol dependence, uncomplicated
    F10.239Alcohol dependence with withdrawal, unspecified
    F10.24Alcohol dependence with alcohol-induced mood disorder
    F11.10Opioid abuse, uncomplicated
    F11.120Opioid abuse with intoxication, uncomplicated
    F11.129Opioid abuse with intoxication, unspecified
    F11.20Opioid dependence, uncomplicated

    Showing 1–10 of 29

    Related Payer Policy Updates

    Specialty: Home Health & Hospice1 / 3

    9 rows

    PolicyPayerEffective Date
    Home Health, Skilled, and Custodial Care Services (for Idaho Only)UnitedHealthcare2026-08-01
    Private Duty Nursing Services (for Florida Only)Colorado Rocky Mountain Health Plans2026-08-01
    Private Duty Nursing ServicesColorado Rocky Mountain Health Plans2026-08-01
    Private Duty Nursing Services (for New Mexico Only)UnitedHealthcare2026-08-01
    Private Duty Nursing Services (for New Jersey Only)UnitedHealthcare2026-08-01
    Private Duty Nursing Services (for Kentucky Only)UnitedHealthcare2026-08-01
    Private Duty Nursing ServicesColorado Rocky Mountain Health Plans2026-08-01
    Private Duty Nursing Services (for Kansas Only)UnitedHealthcare2026-08-01
    Home Health, Skilled, and Custodial Care Services (for Ohio Only)UnitedHealthcare2026-08-01

    Related Codes

    HCPCS-H0001-ALCOHOL-DRUG-ASSESSMENT-OUTPATIENT

    HCPCS H0001: Alcohol and/or Drug Assessment

    HCPCS-H0002-BEHAVIORAL-HEALTH-SCREENING-ADMISSION-ELIGIBILITY

    HCPCS H0002: Behavioral Health Screening for Treatment Admission

    HCPCS-H0003-ALCOHOL-DRUG-SCREENING-LAB-ANALYSIS

    HCPCS Level II H0003: Alcohol and/or Drug Screening Laboratory Analysis

    HCPCS-H0004-BEHAVIORAL-HEALTH-COUNSELING-15-MINUTE

    HCPCS H0004: Behavioral Health Counseling and Therapy, per 15 Minutes

    HCPCS-H0005-GROUP-COUNSELING-SUBSTANCE-USE-CLINICIAN

    HCPCS H0005: Alcohol and/or Drug Group Counseling by Clinician

    HCPCS-H0006-ALCOHOL-DRUG-CASE-MANAGEMENT

    HCPCS H0006: Alcohol and/or Drug Services, Case Management

    HCPCS-H0007-ALCOHOL-DRUG-CRISIS-INTERVENTION-OUTPATIENT

    HCPCS H0007: Alcohol and/or Drug Crisis Intervention (Outpatient)

    HCPCS-H0008-SUB-ACUTE-DETOXIFICATION-HOSPITAL-INPATIENT

    HCPCS H0008: Alcohol and/or Drug Sub-Acute Detoxification (Inpatient)

    HCPCS-H0009-ACUTE-DETOXIFICATION-HOSPITAL-INPATIENT

    HCPCS Level II H0009: Acute Detoxification, Hospital Inpatient

    HCPCS-H0010-SUB-ACUTE-RESIDENTIAL-DETOXIFICATION

    HCPCS H0010: Sub-Acute Detoxification, Residential Inpatient

    Showing 1–10 of 93

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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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    H2034Alcohol and/or drug abuse halfway house services, per diemUsed when the patient resides in a supervised halfway house; relates to programmatic, residential support rather than hourly counseling.
    H0047Alcohol and/or other drug abuse services, not otherwise specifiedUsed for other ambulatory addiction services that do not fit hourly program billing; may be used for miscellaneous counseling or program activities outside H2035.