J40 — Bronchitis, not specified as acute or chronic
Is J40 billable?
Yes — J40 is billable for FY2027. J40 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. J40 may be submitted for encounters from October 1, 2026 through September 30, 2027.
J40 at a glance
| Code | J40 |
|---|---|
| Description | Bronchitis, not specified as acute or chronic |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does J40 group to?
J40 sits in MDC 04 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 202Bronchitis and Asthma with CC/MCCmedical
- 203Bronchitis and Asthma without CC/MCCmedical
How is J40 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to J40. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Bronchitis (diffuse) (fibrinous) (hypostatic) (infective) (membranous)
- Bronchitis › catarrhal (diffuse) (fibrinous) (hypostatic) (infective) (membranous)
- Bronchitis › with › tracheitis (diffuse) (fibrinous) (hypostatic) (infective) (membranous)
- Tracheitis › with › bronchitis (catarrhal) (infantile) (membranous) (plastic) (septal) (suppurative) (viral)
Excludes1 — never code together
The conditions below can never be reported together with J40 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code
Report an additional code alongside J40 to fully describe the condition. J40 is sequenced first.
Inclusion terms
Alternative wording in documentation that is classified to J40.
- Bronchitis NOS
- Bronchitis with tracheitis NOS
- Catarrhal bronchitis
- Tracheobronchitis NOS
Excludes1 — never code together — inherited from J40-J4B
The conditions below can never be reported together with J40 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- bronchitis due to chemicals, gases, fumes and vapors (J68.0)
Use additional code — inherited from Chapter 10
Report an additional code alongside J40 to fully describe the condition. J40 is sequenced first.
Excludes2 — not included here — inherited from Chapter 10
The conditions below are not part of J40, but a patient may have both at the same time. When documentation supports it, J40 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- smoke inhalation (T59.81-)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Excludes2 — not included here — inherited from J40-J4B
The conditions below are not part of J40, but a patient may have both at the same time. When documentation supports it, J40 and the excluded code may both be reported.
- cystic fibrosis (E84.-)
How long has J40 existed?
J40 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with J40?
ICD-10-CM declares these codes mutually exclusive with J40 — exactly one of each pair can be correct for a given encounter.