HZ9 Pharmacotherapy - Substance Abuse Treatment ICD-10-PCS
The HZ9 code range contains 11 ICD-10-PCS codes for Pharmacotherapy procedures on the substance abuse treatment. 10 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Pharmacotherapy: The use of replacement medications for the treatment of addiction.
Codes in the HZ9 Range 11 codes · 10 billable
- HZ9 Substance Abuse Treatment, PharmacotherapyNon-billable header
- HZ90ZZZ Pharmacotherapy for Substance Abuse Treatment, Nicotine Replacement
- HZ91ZZZ Pharmacotherapy for Substance Abuse Treatment, Methadone Maintenance
- HZ92ZZZ Pharmacotherapy for Substance Abuse Treatment, Levo-alpha-acetyl-methadol (LAAM)
- HZ93ZZZ Pharmacotherapy for Substance Abuse Treatment, Antabuse
- HZ94ZZZ Pharmacotherapy for Substance Abuse Treatment, Naltrexone
- HZ95ZZZ Pharmacotherapy for Substance Abuse Treatment, Naloxone
- HZ96ZZZ Pharmacotherapy for Substance Abuse Treatment, Clonidine
- HZ97ZZZ Pharmacotherapy for Substance Abuse Treatment, Bupropion
- HZ98ZZZ Pharmacotherapy for Substance Abuse Treatment, Psychiatric Medication
- HZ99ZZZ Pharmacotherapy for Substance Abuse Treatment, Other Replacement Medication
About the HZ9 Code Range
The ICD-10-PCS root operation Pharmacotherapy (code HZ9) refers to the use of drugs or medications in the treatment of substance abuse. This operation is classified under Substance Abuse Treatment and focuses on managing addiction through specific pharmaceutical agents.
Pharmacotherapy for Substance Abuse Treatment covers a range of medications aimed at supporting recovery and managing withdrawal symptoms. Key examples include Nicotine Replacement (code HZ90ZZZ) for tobacco addiction, Methadone Maintenance (code HZ91ZZZ) and Levo-alpha-acetyl-methadol (LAAM) (code HZ92ZZZ) for opioid dependence, and medications like Antabuse (code HZ93ZZZ) and Naltrexone (code HZ94ZZZ) to deter alcohol use. Additional agents such as Naloxone, Clonidine, Bupropion, and various Psychiatric Medications (codes HZ95ZZZ to HZ98ZZZ) also support treatment programs. Accurate coding of these pharmacotherapies is essential for documentation and reimbursement of substance abuse treatment services.
Questions About This Page
How many billable codes are in the HZ9 range?
Of the 11 codes in this range, 10 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.
What does the HZ9 range classify?
The range classifies Pharmacotherapy procedures, the use of replacement medications for the treatment of addiction, performed on the substance abuse treatment. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
