U.S. ICD-10-CM · FY 2027

Z66 ICD-10-CM Code: Do not resuscitate

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

Z66

Do not resuscitate

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where Z66 sits

  1. 1

    Chapter 21

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

  2. 2

    Section

    Do not resuscitate status (Z66)

  3. 3

    Category Z66

    Do not resuscitate

  4. 4

    Code Z66

    Do not resuscitate

Documentation details

Notes for this code

Inclusion terms

  • DNR status

Code first

No “code first” instruction is listed for Z66.

Use additional code

No “use additional code” instruction is listed for Z66.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for Z66.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for Z66.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code Z66 mean?

Z66 is the FY 2027 U.S. ICD-10-CM code for “Do not resuscitate.”

Is Z66 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, Z66 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is Z66 located in ICD-10-CM?

Z66 is listed in Chapter 21, Factors influencing health status and contact with health services (Z00-Z99), within Do not resuscitate status (Z66) (Z66–Z66), under category Z66, Do not resuscitate.

What coding notes are listed for Z66?

Its listed inclusion terms are DNR status. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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