ICD-10-PCS Tabular Index · Section H · FY 2026 HZ4

HZ4 Group Counseling - Substance Abuse Treatment ICD-10-PCS

The HZ4 code range contains 13 ICD-10-PCS codes for Group Counseling procedures on the substance abuse treatment. 12 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
13
Procedure Codes
12
Billable Codes
HZ4
Characters 1–3
HZ
Parent Body System

Root Operation Definition

Group Counseling: The application of psychological methods to treat two or more individualswith addictive behavior.

ICD-10-PCS

Codes in the HZ4 Range 13 codes · 12 billable

13 of 13 shown
  • HZ4 Substance Abuse Treatment, Group CounselingNon-billable header
  • HZ40ZZZ Group Counseling for Substance Abuse Treatment, Cognitive
  • HZ41ZZZ Group Counseling for Substance Abuse Treatment, Behavioral
  • HZ42ZZZ Group Counseling for Substance Abuse Treatment, Cognitive-Behavioral
  • HZ43ZZZ Group Counseling for Substance Abuse Treatment, 12-Step
  • HZ44ZZZ Group Counseling for Substance Abuse Treatment, Interpersonal
  • HZ45ZZZ Group Counseling for Substance Abuse Treatment, Vocational
  • HZ46ZZZ Group Counseling for Substance Abuse Treatment, Psychoeducation
  • HZ47ZZZ Group Counseling for Substance Abuse Treatment, Motivational Enhancement
  • HZ48ZZZ Group Counseling for Substance Abuse Treatment, Confrontational
  • HZ49ZZZ Group Counseling for Substance Abuse Treatment, Continuing Care
  • HZ4BZZZ Group Counseling for Substance Abuse Treatment, Spiritual
  • HZ4CZZZ Group Counseling for Substance Abuse Treatment, Pre/Post-Test Infectious Disease

About the HZ4 Code Range

The ICD-10-PCS root operation Group Counseling (code prefix HZ4) within the Substance Abuse Treatment classification involves counseling multiple individuals together to address substance use disorders. This approach facilitates therapeutic interaction and support among participants facing similar challenges.

Group Counseling in substance abuse treatment encompasses various therapeutic methods tailored to patient needs. The provided codes illustrate diverse counseling types such as Cognitive (HZ40ZZZ), Behavioral (HZ41ZZZ), and Cognitive-Behavioral (HZ42ZZZ) approaches. It also includes specialized formats like 12-Step programs (HZ43ZZZ), Vocational counseling (HZ45ZZZ), and Motivational Enhancement (HZ47ZZZ). These specific codes enable precise documentation of the counseling modality used during treatment, ensuring accurate reporting and facilitating comprehensive patient care planning. Effectively applying these codes supports clinical tracking and reimbursement for group-based interventions in substance abuse management.

Questions About This Page

How many billable codes are in the HZ4 range?

Of the 13 codes in this range, 12 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 HZ4 range classify?

The range classifies Group Counseling procedures, the application of psychological methods to treat two or more individualswith addictive behavior, 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.