Z79.891

Billable

ChapterZ00–Z99

Ranksubcategory

Official Description

Long term (current) use of opiate analgesic

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99).

Instructional Notes

Includes

Long term (current) use of methadone for pain management

Excludes2(Not included here)

methadone use NOS (F11.9-)
use of methadone for treatment of heroin addiction (F11.2-)

General instructions are available for the parent sections:

View Z77-Z99 Notes View Z79 Notes

Clinical Hierarchy

CH21Factors influencing health status and contact with health services (Z00-Z99)

Z77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

Z79Long term (current) drug therapy

Z79.8Other long term (current) drug therapy

Z79.89Other long term (current) drug therapy

Z79.891Long term (current) use of opiate analgesic

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Z79.891:

categoryZ79

Long term (current) drug therapy

View context instructions

blockZ77-Z99

Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Z79.891. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

4 raw paths

Long-term (current) (prophylactic) drug therapy (use of)2 unique routes

methadone for pain management→Z79.891

opiate analgesic→Z79.891

Therapy2 unique routes

drug, long-term (current) (prophylactic)(2 variants)

methadone

for pain management→Z79.891

opiate analgesic→Z79.891