ICD-10-CM 2027
ICD-10 code for acute bronchitis
Confirmed by the official ICD-10-CM index entry “bronchitis (diffuse) (fibrinous) (hypostatic) (infective) (membranous) › with › tracheitis (l5 years of age and above) › acute or subacute”. Page updated September 29, 2026.
About coding acute bronchitis
The ICD-10-CM code for acute bronchitis is J20.9 (Acute bronchitis, unspecified). The official index lists 9 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J20.9.
It is also searched as chest cold.
Within J20, choose J20.9 (unspecified) only when documentation doesn't support a more specific option: due to Mycoplasma pneumoniae (J20.0), due to Hemophilus influenzae (J20.1), due to streptococcus (J20.2), due to coxsackievirus (J20.3), due to parainfluenza virus (J20.4), due to respiratory syncytial virus (J20.5), due to rhinovirus (J20.6), due to echovirus (J20.7) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 202 (Bronchitis and Asthma with CC/MCC, relative weight 0.9474) and DRG 203 (Bronchitis and Asthma without CC/MCC, relative weight 0.6512), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Related Acute bronchitis codes
- J20.0 Acute bronchitis due to Mycoplasma pneumoniae
- J20.1 Acute bronchitis due to Hemophilus influenzae
- J20.2 Acute bronchitis due to streptococcus
- J20.3 Acute bronchitis due to coxsackievirus
- J20.4 Acute bronchitis due to parainfluenza virus
- J20.5 Acute bronchitis due to respiratory syncytial virus
- J20.6 Acute bronchitis due to rhinovirus
- J20.7 Acute bronchitis due to echovirus
- J20.8 Acute bronchitis due to other specified organisms
Common questions about acute bronchitis ICD-10 codes
What is the ICD-10 code for acute bronchitis?
- J20.9 — Acute bronchitis, unspecified. More specific codes apply when the documentation supports them: J20.0, J20.1, J20.2, J20.3 and others below.
What is the ICD-10 code for acute bronchitis due to mycoplasma pneumoniae?
- J20.0 — Acute bronchitis due to Mycoplasma pneumoniae.
What is the ICD-10 code for acute bronchitis due to hemophilus influenzae?
- J20.1 — Acute bronchitis due to Hemophilus influenzae.
What is the ICD-10 code for acute bronchitis due to streptococcus?
- J20.2 — Acute bronchitis due to streptococcus.
What is the ICD-10 code for acute bronchitis due to coxsackievirus?
- J20.3 — Acute bronchitis due to coxsackievirus.
What is the ICD-10 code for acute bronchitis due to parainfluenza virus?
- J20.4 — Acute bronchitis due to parainfluenza virus.
What is the ICD-10 code for acute bronchitis due to respiratory syncytial virus?
- J20.5 — Acute bronchitis due to respiratory syncytial virus.
Is J20.9 billable?
- Yes. J20.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J20.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J20.9 as a principal diagnosis.
Is J20.9 a CC or MCC?
- No. J20.9 is neither a CC nor an MCC under MS-DRG v44.0.