Unspecified chronic bronchitis (J42)

• ICD-10 Index

  • Diseases of the respiratory system (J00–J99)

    • Chronic lower respiratory diseases (J40-J47)

      • Unspecified chronic bronchitis (J42)

        • J42 - Unspecified chronic bronchitis BILLABLE CODE

Clinical Information for Unspecified chronic bronchitis (J42)

Bronchitis - Inflammation of the large airways in the lung including any part of the BRONCHI, from the PRIMARY BRONCHI to the TERTIARY BRONCHI.

Infectious bronchitis virus - A species of CORONAVIRUS causing infections in chickens and possibly pheasants. Chicks up to four weeks old are the most severely affected.

Coronavirus - A member of CORONAVIRIDAE which causes respiratory or gastrointestinal disease in a variety of vertebrates.

Instructional Notations

Inclusion Terms Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.

• Chronic bronchitis NOS
• Chronic tracheitis
• Chronic tracheobronchitis

Use Additional Code Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an 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

Type 1 Excludes Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

• chronic asthmatic bronchitis J44
• chronic bronchitis with airways obstruction J44
• chronic emphysematous bronchitis J44
• chronic obstructive pulmonary disease NOS J44.9
• simple and mucopurulent chronic bronchitis J41