ICD-10-CM Code Y66

Nonadministration of surgical and medical care

  1. ICD-10-CM Index
  2. Chapter: V01–Y98
  3. Section: Y62-Y84
  4. Block: Y66
  5. Y66 - Nonadministration of surgical and medical care
Version 2020 Billable Code

Valid for Submission

Y66 is a billable code used to specify a medical diagnosis of nonadministration of surgical and medical care. The code is valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:Y66
Short Description:Nonadministration of surgical and medical care
Long Description:Nonadministration of surgical and medical care

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code Y66:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Premature cessation of surgical and medical care

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Index of External Cause of Injuries

References found for the code Y66 in the External Cause of Injuries Index:

    • Nonadministration(of)
      • surgical and medical care
    • Premature cessation(of) surgical and medical care

Convert Y66 to ICD-9

  • E876.8 - Medical misadventure NEC (Approximate Flag)

Code Classification

  • External causes of morbidity and mortality (V01–Y98)
    • Complications of medical and surgical care (Y62-Y84)
      • Nonadministration of surgical and medical care (Y66)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Patient Safety

You can help prevent medical errors by being an active member of your health care team. Research shows that patients who are more involved with their care tend to get better results. To reduce the risk of medical errors, you can

  • Ask questions if you have doubts or concerns. Take a relative or friend to your doctor appointment to help you ask questions and understand answers.
  • Make sure you understand what will happen if you need surgery
  • Tell your health care providers about all the medicines you take, including over-the-counter drugs and dietary supplements. Tell them if you have any allergies or bad reactions to anesthesia. Make sure you know how to take your medications correctly.
  • Get a second opinion about treatment options
  • Keep a copy of your own medical history

Agency for Healthcare Research and Quality


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