Y36.3

⚠ Non-billable (Header)

War operations involving fires, conflagrations and hot substances

External causes of morbidity (V00-Y99)

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

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Also Known As

War operations involving smoke, fumes, and heat from fires, conflagrations and hot substances

❌ Excludes1

direct

These codes are mutually exclusive. Never code them together.

• war operations involving fires and conflagrations aboard military aircraft (Y36.1-)
• war operations involving fires and conflagrations aboard military watercraft (Y36.0-)
• war operations involving fires and conflagrations caused indirectly by conventional weapons (Y36.2-)
• war operations involving fires and thermal effects of nuclear weapons (Y36.53-)

❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

Y36

• 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 (5)

Y36.30War operations involving unspecified fire, conflagration and hot substanceHeader Y36.31War operations involving gasoline bombHeader Y36.32War operations involving incendiary bulletHeader Y36.33War operations involving flamethrowerHeader Y36.39War operations involving other fires, conflagrations and hot substancesHeader

Clinical Description

ICD-10-CM code Y36.3 represents war operations involving fires, conflagrations and hot substances. 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 5-character code at the 4th level of specificity. There are 5 more specific child codes under Y36.3. Coders should note that Y36.3 has 6 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code Y36.3?

ICD-10-CM code Y36.3 is "War operations involving fires, conflagrations and hot substances". It belongs to the category: External causes of morbidity (V00-Y99).

Is Y36.3 a billable ICD-10 code?

No, Y36.3 is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with Y36.3?

Y36.3 has 6 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Related Codes in Y36

Other codes in the same category that may be relevant for differential coding:

Y36.0War operations involving explosion of marine weapons Y36.1War operations involving destruction of aircraft Y36.2War operations involving other explosions and fragments Y36.4War operations involving firearm discharge and other forms of conventional warfare Y36.5War operations involving nuclear weapons Y36.6War operations involving biological weapons Y36.7War operations involving chemical weapons and other forms of unconventional warfare Y36.8War operations occurring after cessation of hostilities Y36.9Other and unspecified war operations Y36.ABlast overpressure in war operations

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Code Information

CodeY36.3

BillableNo — Header code

ParentY36

CategoryExternal causes of morbidity (V00-Y99)

Excludes16 rule(s)

Excludes20 note(s)

Child codes5

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)