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J40

Billable

Bronchitis, not specified as acute or chronic

J40 is the ICD-10-CM code for Bronchitis, not specified as acute or chronic. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
J00-J99
Edition
FY2026

J00-J99 Diseases of the respiratory system

Includes

  • •Bronchitis NOS
  • •Bronchitis with tracheitis NOS
  • •Catarrhal bronchitis
  • •Tracheobronchitis NOS

Excludes1 — not coded here

  • •acute bronchitis (J20.-)
  • •allergic bronchitis NOS (J45.909)
  • •asthmatic bronchitis NOS (J45.9-)
  • •bronchitis due to chemicals, gases, fumes and vapors (J68.0)

Use additional code

  • •code to identify:
  • •exposure to environmental tobacco smoke (Z77.22)
  • •exposure to tobacco smoke in the perinatal period (P96.81)
  • •history of tobacco dependence (Z87.891)
  • •occupational exposure to environmental tobacco smoke (Z57.31)
  • •tobacco dependence (F17.-)
  • •tobacco use (Z72.0)

Frequently asked questions

What is ICD-10 code J40?
J40 is the ICD-10-CM code for "Bronchitis, not specified as acute or chronic". It falls under J00-J99 Diseases of the respiratory system.
Is J40 a billable code?
Yes — J40 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from J40?
Excludes1 (not coded here): acute bronchitis (J20.-); allergic bronchitis NOS (J45.909); asthmatic bronchitis NOS (J45.9-); bronchitis due to chemicals, gases, fumes and vapors (J68.0).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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