ICD-10 J40
Billable / SpecificBronchitis, not specified as acute or chronic
About ICD-10-CM J40
ICD-10-CM code J40 represents Bronchitis, not specified as acute or chronic. This is a billable/specific code in the Respiratory System chapter (block J40). The 2026 edition of ICD-10-CM J40 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under J40. Per CMS ICD-10-CM Tabular 2026.
- Bronchitis NOS
- Bronchitis with tracheitis NOS
- Catarrhal bronchitis
- Tracheobronchitis NOS
Type 1 Excludes
Pure excludes, these codes can never be coded together with J40. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- acute bronchitis (J20.-)
- allergic bronchitis NOS (J45.909)
- asthmatic bronchitis NOS (J45.9-)
- bronchitis due to chemicals, gases, fumes and vapors (J68.0)
Use Additional Code
When coding J40, also report these additional codes when applicable.
- 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)
Medicare LCD Coverage for J40
Local Coverage Determinations (LCDs) from CMS MACs that list J40 as a covered diagnosis.
Showing top 10 of 263 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing J40.
5 Aetna
5 Medicare
CPT Codes Commonly Billed with J40
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 94620 Pulmonary function testing for respiratory symptoms Internal Medicine
Convert J40 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| J40 | 490 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To J40
Other codes in section J40-J4A (Chronic lower respiratory diseases).
ICD-10 J40, Billing FAQ
Is ICD-10 code J40 billable? +
Yes, J40 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to J40? +
ICD-10 J40 includes: Bronchitis NOS; Bronchitis with tracheitis NOS; Catarrhal bronchitis, and 1 more clinical synonyms.
What codes are Type 1 Excludes for J40? +
Type 1 Excludes (never code together with J40): acute bronchitis (J20.-); allergic bronchitis NOS (J45.909); asthmatic bronchitis NOS (J45.9-)
What CPT codes are commonly billed with J40? +
Procedures frequently paired with J40 include: 94620.
What ICD-9 codes does J40 map to? +
Per CMS GEMs, J40 maps to ICD-9 codes: 490. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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