Is ICD-10-CM code Y64 billable?

No, Y64 (Contaminated medical or biological substances) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code Y64 belong to?

Y64 belongs to Chapter 20 of the ICD-10-CM tabular list: V00–Y99 (External Causes of Morbidity).

Y64Not billable, use a more specific code below

Contaminated medical or biological substances

In Misadventures to patients during surgical and medical care (Y62-Y69), chapter 20: External Causes of Morbidity

4 billable codes under Y64: none are a CC or MCC; none map to an HCC.

Instructional notes

Also applies, from Misadventures to patients during surgical and medical care (Y62-Y69)

These notes sit on Y62-Y69 and apply to every code under it, including Y64.

Excludes1: not coded here, use a different code

surgical and medical procedures as the cause of abnormal reaction of the patient, without mention of misadventure at the time of the procedure (Y83-Y84)

Excludes2: not included here, code separately if applicable

breakdown or malfunctioning of medical device (during procedure) (after implantation) (ongoing use) (Y70-Y82)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers how to report external cause codes (V00-Y99) describing cause, intent, place, activity, and status. They are never principal or first-listed, and reporting is voluntary unless required.

General External Cause Coding Guidelines (page 88)
Place of Occurrence Guideline (page 89)
Activity Code (page 89)
Place of Occurrence, Activity, and Status Codes Used with other External Cause Code (page 89)
If the Reporting Format Limits the Number of External Cause Codes (page 90)
Multiple External Cause Coding Guidelines (page 90)
Child and Adult Abuse Guideline (page 90)
Unknown or Undetermined Intent Guideline (page 91)

Read Section I.C.20 (page 87), 3 more topics

All codes under Y64

Y64 can't be used on a claim. Pick a billable code below; grey headings group them.

Y64 MS-DRGs

This code does not group to an MS-DRG as a principal diagnosis.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.