Y36.6X
⚠ Non-billable (Header)War operations involving biological weapons
External causes of morbidity (V00-Y99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • injury to military personnel occurring during peacetime military operations (Y37.-)
- • military vehicles involved in transport accidents with non-military vehicle during peacetime (V09.01, V09.21, V19.81, V29.818, V39.81, V49.81, V59.81, V69.81, V79.81)
Child Codes (2)
Clinical Description
ICD-10-CM code Y36.6X represents war operations involving biological weapons. This code falls under the External causes of morbidity (V00-Y99) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
This is a 6-character code at the 5th level of specificity. There are 2 more specific child codes under Y36.6X. Coders should note that Y36.6X has 2 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code Y36.6X?
ICD-10-CM code Y36.6X is "War operations involving biological weapons". It belongs to the category: External causes of morbidity (V00-Y99).
Is Y36.6X a billable ICD-10 code?
No, Y36.6X is a non-billable header code. A more specific child code must be used for billing.
What codes are excluded with Y36.6X?
Y36.6X has 2 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)