Nonadministration of surgical and medical care (Y66) ICD-10-CM
The Y66 code range covers nonadministration of surgical and medical care with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
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
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.
Codes in the Y66 Range 1 codes · 1 billable
- Y66 Nonadministration of surgical and medical care
About the Y66 Code Range
The ICD-10 code Y66 is used to classify cases where surgical or medical care was not administered as expected. This code specifically identifies situations of nonadministration, meaning that a needed medical or surgical treatment was not given.
Medical coders use Y66 to document incidents where appropriate healthcare procedures were skipped or omitted, which may impact patient outcomes or legal considerations. Unlike codes that describe errors during treatment, Y66 captures the absence of care itself. This includes both surgical and other medical interventions. Understanding this code helps healthcare professionals and coders accurately track cases of untreated medical needs and differentiate them from active treatment complications. If searching for the ICD-10 code for nonadministration of surgical and medical care, Y66 precisely denotes scenarios where the expected medical care was not provided.
Questions About This Page
How many billable codes are in the Y66 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the Y66 range classify?
The range classifies nonadministration of surgical and medical care. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
