ICD-10-CM 2027
ICD-10 code for bronchitis
From the official ICD-10-CM alphabetic index entry “Bronchitis (diffuse) (fibrinous) (hypostatic) (infective) (membranous)”. Page updated September 29, 2026.
About coding bronchitis
The ICD-10-CM code for bronchitis is J40 (Bronchitis, not specified as acute or chronic). The official index lists 74 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J40.
Don't report J40 together with the conditions in its Excludes1 note: acute bronchitis (J20.-), allergic bronchitis NOS (J45.909), asthmatic bronchitis NOS (J45.9-) and bronchitis due to chemicals, gases, fumes and vapors (J68.0).
Use an additional 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.-) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific bronchitis codes (official index)
- with
- influenza, flu or grippe
- obstruction (airway) (lung) J44.89 — Other specified chronic obstructive pulmonary disease
- tracheitis (l5 years of age and above) J40 — Bronchitis, not specified as acute or chronic
- acute or subacute J20.9 — Acute bronchitis, unspecified
- chronic J42 — Unspecified chronic bronchitis
- under l5 years of age J20.9 — Acute bronchitis, unspecified
- acute or subacute (with bronchospasm or obstruction) J20.9 — Acute bronchitis, unspecified
- with
- bronchiectasis J47.0 — Bronchiectasis with acute lower respiratory infection
- chronic obstructive pulmonary disease J44.0 — Chronic obstructive pulmonary disease with (acute) lower respiratory infection
- chemical (due to gases, fumes or vapors) J68.0 — Bronchitis and pneumonitis due to chemicals, gases, fumes and vapors
- due to
- fumes or vapors J68.0 — Bronchitis and pneumonitis due to chemicals, gases, fumes and vapors
- Haemophilus influenzae J20.1 — Acute bronchitis due to Hemophilus influenzae
- Mycoplasma pneumoniae J20.0 — Acute bronchitis due to Mycoplasma pneumoniae
- radiation J70.0 — Acute pulmonary manifestations due to radiation
- specified organism NEC J20.8 — Acute bronchitis due to other specified organisms
- Streptococcus J20.2 — Acute bronchitis due to streptococcus
- virus
- coxsackie J20.3 — Acute bronchitis due to coxsackievirus
- echovirus J20.7 — Acute bronchitis due to echovirus
- parainfluenzae J20.4 — Acute bronchitis due to parainfluenza virus
- respiratory syncytial (RSV) J20.5 — Acute bronchitis due to respiratory syncytial virus
- rhinovirus J20.6 — Acute bronchitis due to rhinovirus
- viral NEC J20.8 — Acute bronchitis due to other specified organisms
- allergic (acute) J45.909 — Unspecified asthma, uncomplicated
- with
- exacerbation (acute) J45.901 — Unspecified asthma with (acute) exacerbation
- status asthmaticus J45.902 — Unspecified asthma with status asthmaticus
- arachidic T17.528 — Food in bronchus causing other injury
- aspiration (due to food and vomit) J69.0 — Pneumonitis due to inhalation of food and vomit
- asthmatic J45.9 — Other and unspecified asthma
- chronic J44.89 — Other specified chronic obstructive pulmonary disease
- with
- acute lower respiratory infection J44.0 — Chronic obstructive pulmonary disease with (acute) lower respiratory infection
- exacerbation (acute) J44.1 — Chronic obstructive pulmonary disease with (acute) exacerbation
- capillary
- caseous (tuberculous) A15.5 — Tuberculosis of larynx, trachea and bronchus
- Castellani's A69.8 — Other specified spirochetal infections
- catarrhal (l5 years of age and above) J40 — Bronchitis, not specified as acute or chronic
- acute
- chronic J41.0 — Simple chronic bronchitis
- under l5 years of age J20.9 — Acute bronchitis, unspecified
- chemical (acute) (subacute) J68.0 — Bronchitis and pneumonitis due to chemicals, gases, fumes and vapors
- chronic J68.4 — Chronic respiratory conditions due to chemicals, gases, fumes and vapors
- due to fumes or vapors J68.4 — Chronic respiratory conditions due to chemicals, gases, fumes and vapors
- chronic J68.4 — Chronic respiratory conditions due to chemicals, gases, fumes and vapors
- chronic J42 — Unspecified chronic bronchitis
- with
- airways obstruction J44.89 — Other specified chronic obstructive pulmonary disease
- tracheitis (chronic) J42 — Unspecified chronic bronchitis
- asthmatic (obstructive) J44.89 — Other specified chronic obstructive pulmonary disease
- catarrhal J41.0 — Simple chronic bronchitis
- chemical (due to fumes or vapors) J68.4 — Chronic respiratory conditions due to chemicals, gases, fumes and vapors
- due to
- chemicals, gases, fumes or vapors (inhalation) J68.4 — Chronic respiratory conditions due to chemicals, gases, fumes and vapors
- radiation J70.1 — Chronic and other pulmonary manifestations due to radiation
- tobacco smoking J41.0 — Simple chronic bronchitis
- emphysematous J44.89 — Other specified chronic obstructive pulmonary disease
- mucopurulent J41.1 — Mucopurulent chronic bronchitis
- non-obstructive J41.0 — Simple chronic bronchitis
- obliterans
- obstructive J44.89 — Other specified chronic obstructive pulmonary disease
- purulent J41.1 — Mucopurulent chronic bronchitis
- simple J41.0 — Simple chronic bronchitis
- croupous
- due to gases, fumes or vapors (chemical) J68.0 — Bronchitis and pneumonitis due to chemicals, gases, fumes and vapors
- emphysematous (obstructive) J44.89 — Other specified chronic obstructive pulmonary disease
- exudative
- fetid J41.1 — Mucopurulent chronic bronchitis
- grippal
- in those under l5 years age
- chronic
- influenzal
- mixed simple and mucopurulent J41.8 — Mixed simple and mucopurulent chronic bronchitis
- moulder's J62.8 — Pneumoconiosis due to other dust containing silica
- mucopurulent (chronic) (recurrent) J41.1 — Mucopurulent chronic bronchitis
- acute or subacute J20.9 — Acute bronchitis, unspecified
- simple (mixed) J41.8 — Mixed simple and mucopurulent chronic bronchitis
- obliterans (chronic)
- obstructive (chronic) (diffuse) J44.89 — Other specified chronic obstructive pulmonary disease
- pituitous J41.1 — Mucopurulent chronic bronchitis
- pneumococcal, acute or subacute J20.2 — Acute bronchitis due to streptococcus
- pseudomembranous, acute or subacute
- purulent (chronic) (recurrent) J41.1 — Mucopurulent chronic bronchitis
- acute or subacute
- putrid J41.1 — Mucopurulent chronic bronchitis
- senile (chronic) J42 — Unspecified chronic bronchitis
- simple and mucopurulent (mixed) J41.8 — Mixed simple and mucopurulent chronic bronchitis
- smokers' J41.0 — Simple chronic bronchitis
- spirochetal NEC A69.8 — Other specified spirochetal infections
- subacute
- suppurative (chronic) J41.1 — Mucopurulent chronic bronchitis
- acute or subacute
- tuberculous A15.5 — Tuberculosis of larynx, trachea and bronchus
- under l5 years of age
- chronic
- viral NEC, acute or subacute J20.8 — Acute bronchitis due to other specified organisms
Don't confuse with (Excludes1 for J40)
Common questions about bronchitis ICD-10 codes
What is the ICD-10 code for bronchitis?
- J40 — Bronchitis, not specified as acute or chronic. More specific codes apply when the documentation supports them: J44.89, J40, J20.9, J42 and others below.
What is the ICD-10 code for acute or subacute bronchitis?
- J20.9 — Acute bronchitis, unspecified.
What is the ICD-10 code for allergic bronchitis?
- J45.909 — Unspecified asthma, uncomplicated.
What is the ICD-10 code for arachidic bronchitis?
- T17.528 — Food in bronchus causing other injury (header code; choose a more specific subcode).
What is the ICD-10 code for aspiration bronchitis?
- J69.0 — Pneumonitis due to inhalation of food and vomit.
What is the ICD-10 code for asthmatic bronchitis?
- J45.9 — Other and unspecified asthma (header code; choose a more specific subcode).
What is the ICD-10 code for caseous bronchitis?
- A15.5 — Tuberculosis of larynx, trachea and bronchus.
Is J40 billable?
- Yes. J40 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J40 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J40 as a principal diagnosis.
Is J40 a CC or MCC?
- No. J40 is neither a CC nor an MCC under MS-DRG v44.0.