J40 ICD-10-CM Code: Bronchitis, not specified as acute or chronic
J40 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC coding software
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Diseases of the respiratory system (J00-J99) / Chronic lower respiratory diseases (J40-J4A)
J40
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceBronchitis, not specified as acute or chronic
Inflammation of the airways in the lungs (bronchitis) without clear indication of whether it is acute or chronic in nature.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Bronchitis NOS
- Bronchitis with tracheitis NOS
- Catarrhal bronchitis
- Tracheobronchitis NOS
Excludes 2
Official- certain conditions originating in the perinatal period (P04-P96)Inherited from J00-J99, J40-J4A
- certain infectious and parasitic diseases (A00-B99)Inherited from J00-J99, J40-J4A
- complications of pregnancy, childbirth and the puerperium (O00-O9A)Inherited from J00-J99, J40-J4A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Inherited from J00-J99, J40-J4A
- endocrine, nutritional and metabolic diseases (E00-E88)Inherited from J00-J99, J40-J4A
- injury, poisoning and certain other consequences of external causes (S00-T88)Inherited from J00-J99, J40-J4A
- neoplasms (C00-D49)Inherited from J00-J99, J40-J4A
- smoke inhalation (T59.81-)Inherited from J00-J99, J40-J4A
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)Inherited from J00-J99, J40-J4A
- cystic fibrosis (E84.-)Inherited from J00-J99, J40-J4A
Related Codes
No related codes are included in this display for J40. Check the Code Book for the complete code path.
Includes
OfficialNo Includes notes are included in this display for J40. Check the code and parent instructions in the Code Book.
Excludes 1
Official- acute bronchitis (J20.-)
- allergic bronchitis NOS (J45.909)
- asthmatic bronchitis NOS (J45.9-)
- bronchitis due to chemicals, gases, fumes and vapors (J68.0)Inherited from J40-J4A
Code First
OfficialNo Code First sequencing instructions are included in this display for J40. Check the code and parent instructions in the Code Book.
Use Additional
Official- code to identify:
- exposure to environmental tobacco smoke (Z77.22)Inherited from J00-J99
- exposure to tobacco smoke in the perinatal period (P96.81)Inherited from J00-J99
- history of tobacco dependence (Z87.891)Inherited from J00-J99
- occupational exposure to environmental tobacco smoke (Z57.31)Inherited from J00-J99
- tobacco dependence (F17.-)Inherited from J00-J99
- tobacco use (Z72.0)Inherited from J00-J99
- code, where applicable, to identify:Inherited from J00-J99
Code Also
OfficialNo Code Also instructions are included in this display for J40. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is J40 an HCC code?
No. J40 is a billable ICD-10-CM code with no mapping under the current CMS-HCC V28 community payment model, and none under the ESRD, Part D RxHCC, or HHS-HCC models.
- Code
- J40
- Description
- Bronchitis, not specified as acute or chronic
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
Get the V28 mapping + MEAT cheat sheet
One printable reference: check representative V28 mappings and the documentation reminders your note needs. Free, no card.
Free PDF. No card. Unsubscribe anytime.
What This Code Means
J40 is the ICD-10-CM diagnosis code for bronchitis, not specified as acute or chronic. Inflammation of the airways in the lungs (bronchitis) without clear indication of whether it is acute or chronic in nature. J40 sits in the ICD-10-CM chapter for diseases of the respiratory system (j00-j99), within the section covering chronic lower respiratory diseases (j40-j4a).
J40 is a billable ICD-10-CM code, but no current CMS-HCC V28 community payment mapping is shown, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.
Query the provider to determine if bronchitis is acute or chronic, as more specific codes (J20 for acute, J41-J42 for chronic) are preferred.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for J40 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.