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.