Y37.3
Non-Billable

Military operations involving fires, conflagrations and hot substances

Non-Billable / Non-Specific Code

What is Military operations involving fires, conflagrations and hot substances?

ICD-10-CM Y37.3 is the diagnosis code for Military operations involving fires, conflagrations and hot substances. This code falls under the section "Legal intervention, operations of war, military operations, and terrorism" within Chapter 20 — External causes of morbidity (V00-Y99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

💡 Inclusions
⛔ Excludes1

Coding Guidelines for Y37.3

✅ This Code Includes

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

⛔ Type 1 Excludes (Never code together)

The following conditions should never be coded at the same time as Y37.3. They are mutually exclusive:

  • military operations involving fires and conflagrations aboard military aircraft (Y37.1-)
  • military operations involving fires and conflagrations aboard military watercraft (Y37.0-)
  • military operations involving fires and conflagrations caused indirectly by conventional weapons (Y37.2-)
  • military operations involving fires and thermal effects of nuclear weapons (Y36.53-)

ICD-10-CM Code Hierarchy

Understanding where Y37.3 sits in the ICD-10-CM classification helps ensure proper coding:

Current CodeY37.3 — Military operations involving fires, conflagrations and hot substances
Sub-Codes 5 entries
Y37.30Military operations involving unspecified fire, conflagration and hot substanceNon-BillableY37.300Military operations involving unspecified fire, conflagration and hot substance, military personnelBillableY37.301Military operations involving unspecified fire, conflagration and hot substance, civilianBillableY37.31Military operations involving gasoline bombNon-BillableY37.310Military operations involving gasoline bomb, military personnelBillableY37.311Military operations involving gasoline bomb, civilianBillableY37.32Military operations involving incendiary bulletNon-BillableY37.320Military operations involving incendiary bullet, military personnelBillableY37.321Military operations involving incendiary bullet, civilianBillableY37.33Military operations involving flamethrowerNon-BillableY37.330Military operations involving flamethrower, military personnelBillableY37.331Military operations involving flamethrower, civilianBillableY37.39Military operations involving other fires, conflagrations and hot substancesNon-BillableY37.390Military operations involving other fires, conflagrations and hot substances, military personnelBillableY37.391Military operations involving other fires, conflagrations and hot substances, civilianBillable
Related Codes

Frequently Asked Questions

Is Y37.3 a billable ICD-10-CM code?

No, Y37.3 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does Y37.3 mean?

Y37.3 is the ICD-10-CM diagnosis code for "Military operations involving fires, conflagrations and hot substances". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of Y37.3?

The parent code of Y37.3 is Y37 ("Military operations"). Y37.3 provides a more specific classification within this category.

What section is Y37.3 in?

Y37.3 is located in Section Y35-Y38 — "Legal intervention, operations of war, military operations, and terrorism" within Chapter 20 of the ICD-10-CM Tabular List.

What are the sub-codes of Y37.3?

Y37.3 has 5 sub-code(s) that provide more specific detail: Y37.30, Y37.31, Y37.32, Y37.33, Y37.39.

When should I use Y37.3?

Use Y37.3 when the patients documented diagnosis matches "Military operations involving fires, conflagrations and hot substances" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Military operations involving fires, conflagrations and hot substances?

The ICD-10-CM code for Military operations involving fires, conflagrations and hot substances is Y37.3.

Can Y37.3 be used for primary diagnosis?

No, Y37.3 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is Y37.3 in?

Y37.3 is in Chapter 20 of the ICD-10-CM Tabular List.

What conditions are excluded from Y37.3?

Type 1 Excludes for Y37.3 include: military operations involving fires and conflagrations aboard military aircraft (Y37.1-); military operations involving fires and conflagrations aboard military watercraft (Y37.0-); military operations involving fires and conflagrations caused indirectly by conventional weapons (Y37.2-) and more.

Is Y37.3 valid for 2026?

Yes, Y37.3 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousY37.291Military operations involving other explosions and fragments, civilianNext →Y37.30Military operations involving unspecified fire, conflagration and hot substance
Code Details
Y37.3
Military operations involving fires, conflagrations and hot substances
Non-Billable / Non-Specific Code
20 — External causes of morbidity (V00-Y99)
Y35-Y38 — Legal intervention, operations of war, military operations, and terrorism
2026 ICD-10-CM