J20.9 ICD-10-CM Code: Acute bronchitis, unspecified

J20.9 is the billable ICD-10-CM code for “Acute bronchitis, unspecified” in the FY 2027 U.S. code set, effective Oct 1, 2026.

Official description

J20.9

Acute bronchitis, unspecified

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

More specific than J20.9

J20.9 is an unspecified code, for when the note doesn’t say more. If it documents the type, cause, or site, one of these codes may fit better.

Where J20.9 sits

  1. 1

    Chapter 10

    Diseases of the respiratory system (J00-J99)

  2. 2

    Section

    Other acute lower respiratory infections (J20-J22)

  3. 3

    Category J20

    Acute bronchitis

  4. 4

    Code J20.9

    Acute bronchitis, unspecified

Notes for this code

Inclusion terms

No inclusion terms are listed for J20.9.

Code first

No “code first” instruction is listed for J20.9.

Use additional code

No “use additional code” instruction is listed for J20.9.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for J20.9.

Excludes2

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

No Excludes2 note is listed for J20.9.

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

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.

Frequently asked questions

What does ICD-10-CM code J20.9 mean?

J20.9 is the FY 2027 U.S. ICD-10-CM code for “Acute bronchitis, unspecified.”

Is J20.9 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, J20.9 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 J20.9 located in ICD-10-CM?

J20.9 is listed in Chapter 10, Diseases of the respiratory system (J00-J99), within Other acute lower respiratory infections (J20-J22) (J20–J22), under category J20, Acute bronchitis.

What coding notes are listed for J20.9?

No inclusion terms are listed for J20.9 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.