Do not resuscitate
chapter 21: Factors Influencing Health Status and Contact with Health Services
- Z66 is billable and valid on claims for FY 2027.
- As a secondary diagnosis it is not a CC or MCC, so it doesn't raise the MS-DRG payment.
- Doesn't count toward a Medicare Advantage risk score (no HCC in V28).
- Medicare edits don't accept it as the principal diagnosis. (Unacceptable Principal list)
Also indexed as: DNR; Status, do not resuscitate
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Instructional notes
Includes: conditions that are coded here
- DNR status
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers when and how to use Z codes (Z00-Z99) for encounters and supplementary information, including contact, status, history, screening, aftercare, exams, and social determinants of health.
Z66 MS-DRG
As the principal diagnosis, Z66 groups to MS-DRG 951 (v44.0).
Related conditions
Grouped by AHRQ's Clinical Classifications Software Refined (CCSR), which sorts every diagnosis code into clinically meaningful categories.
Z66 is in Other specified status (FAC025), with 243 codes. Others in it:
- Z14.01 Asymptomatic hemophilia A carrier
- Z14.02 Symptomatic hemophilia A carrier
- Z14.1 Cystic fibrosis carrier
- Z14.8 Genetic carrier of other disease
- Z18.01 Retained depleted uranium fragments
- Z18.09 Other retained radioactive fragments
- Z18.10 Retained metal fragments, unspecified
- Z18.11 Retained magnetic metal fragments
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
End of Life Issues
Planning for the end of life can be difficult. But by deciding what end-of-life care best suits your needs when you are healthy, you can help those close to you make the right choices when the time comes.
Read more about end of life issues on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.
ICD-9-CM equivalent
Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).
- V49.86 Do not resuscitate status