Summary & Overview
HCPCS Level II H0011: Acute Inpatient Alcohol/Drug Detoxification
HCPCS Level II code H0011 designates acute inpatient detoxification for alcohol and/or drug withdrawal, billed on a per diem basis. The code captures services provided in a hospital when patients require medically supervised withdrawal management due to the severity of intoxication, dependence, or withdrawal risk. Nationally, accurate use of this code affects access to medically necessary detoxification services and alignment between clinical care pathways and hospital billing practices.
Major payers evaluated include Aetna, Blue Cross Blue Shield, Cigna Health, and UnitedHealthcare. Coverage policies from these payers shape utilization management, prior authorization, and benefit design for inpatient detoxification services. Understanding payer approaches helps health systems and clinicians navigate authorization requirements and billing workflows.
Readers will find a concise overview of the clinical context for acute detoxification, the typical inpatient site of service, related billing considerations, and how H0011 compares to related detoxification and treatment codes. The publication also outlines common diagnosis contexts associated with acute detoxification and identifies areas where coding clarity and documentation support correct claim submission. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code H0011 represents alcohol and/or drug services: acute detoxification (hospital inpatient) per diem. This service falls under Substance Abuse Treatment and is intended to cover medically supervised acute detoxification provided in an inpatient hospital setting (Place of Service 21). The code describes a per diem billing unit for comprehensive, medically monitored withdrawal management delivered within the hospital environment.
Clinical & Coding Specifications
Clinical Context
A 45-year-old hospitalized patient with a history of severe alcohol dependence presents with acute withdrawal symptoms (tremor, autonomic instability, confusion) requiring intensive medical management. The patient is admitted to an inpatient hospital (POS 21) for medically monitored detoxification. Daily interdisciplinary care includes physician assessment, nursing monitoring, medication management (e.g., benzodiazepines or other withdrawal therapies), and coordination with addiction services for transition to ongoing treatment after stabilization. Billing is performed per inpatient hospital per diem using HCPCS Level II code H0011 for acute detoxification services.
Coding Specifications
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Modifiers:
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TG— Complex/high tech level of care: used when the acute detoxification per diem involves a more complex or resource-intensive level of inpatient care than standard per diem (for example, higher monitoring needs or intensive medical interventions). -
HF— Substance abuse program: used to indicate services provided within a recognized substance abuse program setting or program-specific billing context. -
Provider taxonomies and specialties:
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101YA0400X— Addiction Medicine Physician: physicians specializing in diagnosis and medical management of substance use disorders. -
103TP2701X— Psychologist, Addiction: licensed psychologists with a focus on addiction assessment and behavioral interventions. -
207QA0401X— Family Medicine, Addiction Medicine: family medicine clinicians with addiction medicine training and certification. -
2084P0800X— Psychiatry & Neurology, Addiction Psychiatry: psychiatrists specializing in addiction psychiatry.
Related Diagnoses
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F10.239— Alcohol dependence with withdrawal, unspecified- Clinical relevance: Identifies patients experiencing alcohol dependence accompanied by withdrawal symptoms, a common indication for acute inpatient detoxification billed with
H0011.
- Clinical relevance: Identifies patients experiencing alcohol dependence accompanied by withdrawal symptoms, a common indication for acute inpatient detoxification billed with
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F11.23— Opioid dependence with withdrawal- Clinical relevance: Indicates opioid dependence with active withdrawal; may necessitate inpatient medical management and per diem billing under
H0011when acute care is required.
- Clinical relevance: Indicates opioid dependence with active withdrawal; may necessitate inpatient medical management and per diem billing under
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F19.239— Other psychoactive substance dependence with withdrawal, unspecified- Clinical relevance: Captures withdrawal from substances other than alcohol or opioids; acute withdrawal management in the hospital can be billed with
H0011when medically necessary.
- Clinical relevance: Captures withdrawal from substances other than alcohol or opioids; acute withdrawal management in the hospital can be billed with
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F10.20— Alcohol dependence, uncomplicated- Clinical relevance: Alcohol dependence without current withdrawal; relevant when inpatient detoxification is indicated or when documenting the underlying substance use disorder during an acute admission billed with
H0011.
- Clinical relevance: Alcohol dependence without current withdrawal; relevant when inpatient detoxification is indicated or when documenting the underlying substance use disorder during an acute admission billed with
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F11.20— Opioid dependence, uncomplicated- Clinical relevance: Opioid dependence without withdrawal documented; may be listed as a comorbid diagnosis during an inpatient detoxification episode billed with
H0011.
- Clinical relevance: Opioid dependence without withdrawal documented; may be listed as a comorbid diagnosis during an inpatient detoxification episode billed with
Related Codes
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H0010— Alcohol and/or drug services; sub-acute detoxification (residential addiction program inpatient)- Relation:
H0010describes sub-acute, residential inpatient detoxification and is an alternative for lower-acuity inpatient/residential programs; may be used instead ofH0011when the level of medical monitoring is sub-acute rather than acute.
- Relation:
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H0012— Alcohol and/or drug services; sub-acute detoxification (residential addiction program outpatient)- Relation:
H0012is for sub-acute detoxification in a residential outpatient setting; represents a different site/acuity and is an alternative when services are delivered outside the hospital inpatient setting.
- Relation:
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H0014— Alcohol and/or drug services; ambulatory detoxification- Relation:
H0014covers ambulatory (outpatient) detoxification services and is an alternative toH0011when detoxification is managed without inpatient admission.
- Relation:
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H2036— Alcohol and/or drug treatment program, per diem- Relation:
H2036is a per diem treatment program code for ongoing program services; it may be used for program/day services distinct from acute inpatient medical detoxification billed withH0011.
- Relation:
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Common usage:
H0011is used for acute hospital inpatient per diem detoxification;H0010,H0012, andH0014are alternatives at lower acuity or different sites, whileH2036applies to program per diems and may be used in follow-up or step-down care.
National Reimbursement Benchmarks
National mean rates for HCPCS Level II code H0011 show that Blue Cross Blue Shield, Aetna, Cigna Health, UnitedHealthcare, and BUCA differ materially; BUCA (average commercial) mean rate of $176.15 is lower than UnitedHealthcare and Aetna but higher than Cigna Health, while Medicare data is not available in the input so a direct Medicare vs BUCA comparison cannot be computed from the provided values. The table and chart below present the full breakdown of available national benchmarks.
Rate dispersion (P75 − P25) varies by payer. UnitedHealthcare exhibits one of the widest spreads (472.00 − 50.00 = $422.00), followed by Blue Cross Blue Shield (273.33 − 41.00 = $232.33) and Aetna (358.00 − 255.00 = $103.00). Cigna Health is the tightest with no dispersion at the reported percentiles (15.00 − 15.00 = $0.00). BUCA shows moderate dispersion (255.50 − 17.50 = $238.00). The table and chart below present the full breakdown.
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