
ICD-10 Code J20.9 – Acute Bronchitis Unspecified

What is ICD-10 Code J20.9?e
ICD-10 code J20.9 classifies acute bronchitis as unspecified when the cause (e.g., viral, bacterial) is not documented. It falls under the J20-J22 category for lower respiratory infections. J20.9 is important for both providers and medical billers, representing cases where the diagnosis of acute bronchitis is clear, but the specifics are not provided.
When to Use J20.9
- Symptoms: Cough, mucus, wheezing without confirmed cause.
- Documentation Gaps: Provider doesn’t specify pathogen (e.g., RSV, rhinovirus).
- Avoid If: A specific J20.x code applies (e.g., J20.5 for acute bronchitis due to RSV).
Common Mistake: Using J20.9 for chronic bronchitis (J40-J42) → Leads to denials!
Coding Guidelines (AAPC & CMS)
- Modifier “G”: In some countries (e.g., Germany, “CIE-10-GM”), “G” denotes a confirmed diagnosis. Not used in standard ICD-10-CM.
- Combination Codes: Pair J20.9 with codes for symptoms (R05.1 for acute cough) or exposures (Z77.22 for tobacco use).
- Documentation Must Include:
- “Acute bronchitis” in the diagnosis.
- Duration (e.g., “10-day cough”).
Top 5 J20.9 Coding Errors
- Overusing J20.9 when a specific code (e.g., J20.0 for acute bronchitis due to Mycoplasma pneumoniae) is available.
- Ignoring Excludes1 Notes: J20.9 excludes chronic bronchitis (J40) or allergic bronchitis (J45.909).
- Missing “Acute”: Claims denied if the provider only documents “bronchitis” without specifying acute.
- Incorrect Sequencing: List J20.9 as the primary dx for bronchitis-focused visits.
- Mixing with J22: J22 (unspecified lower respiratory infection) is for cases without confirmed bronchitis.
Final thoughts
Acute bronchitis and its corresponding ICD-10 code, J20.9, is crucial for effective diagnosis and billing in healthcare. This knowledge ensures precise treatment and enhances patient care. Remember, J20.9 isn’t just a code; it’s a gateway to better healthcare management.
Frequently Asked Questions (FAQs)
Yes, but if the cause is known (e.g., RSV in infants), use a more specific code.
J20.9 = acute (short-term), J40 = chronic (persistent for 3+ months).
Specify “acute,” avoid vague terms like “bronchitis NOS,” and link to symptom