Y64Header code — not billable

Contaminated medical or biological substances

Chapter
20. External causes of morbidity
Category
Y64
Effective date
October 1, 2026

Related codes in category Y64

Y64.0Contaminated med/biolog sub, transfused or infusedYesY64.1Contaminated med/biolog sub, injected or used for immunizYesY64.8Contaminated med/biolog sub administered by oth meansYesY64.9Contaminated med/biolog sub administered by unsp meansYes

Frequently asked questions

What is ICD-10 code Y64?

Y64 is an ICD-10-CM diagnosis code for Contaminated medical or biological substances.

Is Y64 a billable code?

No. Y64 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is Y64 in?

Y64 falls under Chapter 20: External causes of morbidity.

When did Y64 become effective?

Y64 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to Y64?

Y64 belongs to category Y64, which includes 4 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.