Z66 Do not resuscitate

The ICD-10-CM code for Do not resuscitate is Z66 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

21: Factors influencing health status and contact with health services (Z00-Z99)

Section

Z66: Do not resuscitate status (Z66)

Category Z66

1 code (1 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Z66:

• DNR (do not resuscitate)
• Status (post) › do not resuscitate (DNR)

Inclusion Terms

• DNR status

U.S. Hospital Utilization

• An estimated 2,866,131 U.S. inpatient stays in 2023 included Z66 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Z66 use when DNR status documented by provider

Z66 Do not resuscitate This code may be used when it is documented by the provider that a patient is on do not resuscitate status at any time during the stay.

Used with any code in range A00.0-T88.9, Z00-Z99

1) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)

Cite This Page

Reference Z66 with the canonical source and edition:

Z66 — Do not resuscitate. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/Z66

Canonical URL: https://icd10codingpro.com/codes/Z66