U.S. ICD-10-CM · FY 2027

Y66 ICD-10-CM Code: Nonadministration of surgical and medical care

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

Code definition

Official description

Y66

Nonadministration of surgical and medical care

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

Classification

Where Y66 sits

  1. 1

    Chapter 20

    External causes of morbidity (V00-Y99)

  2. 2

    Section

    Complications of medical and surgical care (Y62-Y84)

  3. 3

    Category Y66

    Nonadministration of surgical and medical care

  4. 4

    Code Y66

    Nonadministration of surgical and medical care

Documentation details

Notes for this code

Inclusion terms

  • Premature cessation of surgical and medical care

Code first

No “code first” instruction is listed for Y66.

Use additional code

No “use additional code” instruction is listed for Y66.

Excludes1

Conditions that should not be reported together with this code.

  • DNR status (Z66)
  • palliative care (Z51.5)

Excludes2

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

No Excludes2 note is listed for Y66.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

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 Y66 mean?

Y66 is the FY 2027 U.S. ICD-10-CM code for “Nonadministration of surgical and medical care.”

Is Y66 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, Y66 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 Y66 located in ICD-10-CM?

Y66 is listed in Chapter 20, External causes of morbidity (V00-Y99), within Complications of medical and surgical care (Y62-Y84) (Y62–Y84), under category Y66, Nonadministration of surgical and medical care.

What coding notes are listed for Y66?

Its listed inclusion terms are Premature cessation of surgical and medical care. No code-first instruction is listed. Excludes1 notes: DNR status (Z66); palliative care (Z51.5). No Excludes2 note is listed.

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