ICD10Check
CheckerBrowseOpen

Y37.7X

⚠ Non-billable (Header)

Military operations involving chemical weapons and other forms of unconventional warfare

External causes of morbidity (V00-Y99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

Check This Code

❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

Y37.7
  • • military operations involving incendiary devices (Y36.3-, Y36.5-)
Y37
  • • military aircraft involved in aircraft accident with civilian aircraft (V97.81-)
  • • military vehicles involved in transport accident with civilian vehicle (V09.01, V09.21, V19.81, V29.818, V39.81, V49.81, V59.81, V69.81, V79.81)
  • • military watercraft involved in water transport accident with civilian watercraft (V94.81-)
  • • war operations (Y36.-)

Child Codes (2)

Y37.7X0Military operations involving chemical weapons and other forms of unconventional warfare, military personnelY37.7X1Military operations involving chemical weapons and other forms of unconventional warfare, civilian

Clinical Description

ICD-10-CM code Y37.7X represents military operations involving chemical weapons and other forms of unconventional warfare. 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 Y37.7X. Coders should note that Y37.7X has 5 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code Y37.7X?

ICD-10-CM code Y37.7X is "Military operations involving chemical weapons and other forms of unconventional warfare". It belongs to the category: External causes of morbidity (V00-Y99).

Is Y37.7X a billable ICD-10 code?

No, Y37.7X is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with Y37.7X?

Y37.7X has 5 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

🧪 Validate Combinations

Add Y37.7X to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeY37.7X
BillableNo — Header code
ParentY37.7
CategoryExternal causes of morbidity (V00-Y99)
Excludes15 rule(s)
Excludes20 note(s)
Child codes2

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)