Y66Billable
Nonadministration of surgical and medical care
- Chapter
- 20. External causes of morbidity
- Category
- Y66
- Effective date
- October 1, 2026
Frequently asked questions
What is ICD-10 code Y66?
Y66 is an ICD-10-CM diagnosis code for Nonadministration of surgical and medical care.
Is Y66 a billable code?
Yes. Y66 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is Y66 in?
Y66 falls under Chapter 20: External causes of morbidity.
When did Y66 become effective?
Y66 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.