Y64 vs Y70

Y64 (Contaminated medical or biological substances) compared with Y70 (Anesthesiology devices associated with adverse incidents), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. Y64 carries an Excludes2 note covering Y70: “breakdown or malfunctioning of medical device (during procedure) (after implantation) (ongoing use) (Y70-Y82)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

	Y64Contaminated medical or biological substances	Y70Anesthesiology devices associated with adverse incidents
Billing status	Non-billable header Report instead: Y64.0, Y64.1, Y64.8, Y64.9	Non-billable header Report instead: Y70.0, Y70.1, Y70.2, Y70.3, Y70.8
Classification	V00-Y99 — External Causes of Morbidity (V00-Y99)	V00-Y99 — External Causes of Morbidity (V00-Y99)
Definition	Contaminated medical or biological substances is a non-billable ICD-10-CM category code (Y64).	Anesthesiology devices associated with adverse incidents is a non-billable ICD-10-CM category code (Y70).
Includes	—	breakdown or malfunction of medical devices (during use) (after implantation) (ongoing use)

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources