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U.S. ICD-10-CM · FY 2027

J40 ICD-10-CM Code: Bronchitis, not specified as acute or chronic

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

J40

Bronchitis, not specified as acute or chronic

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where J40 sits

  1. 1

    Chapter 10

    Diseases of the respiratory system (J00-J99)

  2. 2

    Section

    Chronic lower respiratory diseases (J40-J4B)

  3. 3

    Category J40

    Bronchitis, not specified as acute or chronic

  4. 4

    Code J40

    Bronchitis, not specified as acute or chronic

Documentation details

Notes for this code

Inclusion terms

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

Code first

No “code first” instruction is listed for J40.

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)

Excludes1

Conditions that should not be reported together with this code.

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

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for J40.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code J40 mean?

J40 is the FY 2027 U.S. ICD-10-CM code for “Bronchitis, not specified as acute or chronic.”

Is J40 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, J40 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is J40 located in ICD-10-CM?

J40 is listed in Chapter 10, Diseases of the respiratory system (J00-J99), within Chronic lower respiratory diseases (J40-J4B) (J40–J4B), under category J40, Bronchitis, not specified as acute or chronic.

What coding notes are listed for J40?

Its listed inclusion terms are Bronchitis NOS; Bronchitis with tracheitis NOS; Catarrhal bronchitis; Tracheobronchitis NOS. No code-first instruction is listed. Additional-code instructions: 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). Excludes1 notes: acute bronchitis (J20.-); allergic bronchitis NOS (J45.909); asthmatic bronchitis NOS (J45.9-); bronchitis due to chemicals, gases, fumes and vapors (J68.0). No Excludes2 note is listed.

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