Bronchiolitis ICD-10-CM Codes | 2023

Explore the essential ICD-10 codes for Bronchiolitis diagnosis and billing. Stay updated with the latest coding guidelines for accurate medical documentation.

By Wynona Jugueta on Aug 8, 2025.

Fact Checked by Ericka Pingol.

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What ICD-10 Codes are Used for Bronchiolitis?

Bronchiolitis is a prevalent respiratory ailment, especially among infants and young children. It manifests as inflammation of the bronchioles, the tiny airways in the lungs.

The ICD-10-CM system, a crucial component in modern medical documentation, offers specific codes to capture the nuances of this condition, ensuring precise diagnosis and streamlined billing. Here's a deeper dive into some of the frequently employed codes for bronchiolitis:

J21.9 - Acute Bronchiolitis, Unspecified: This is the go-to code when a diagnosis of bronchiolitis is confirmed, but the underlying cause or agent remains unidentified. It's a broad categorization, often used when further tests to determine the causative agent are pending or deemed unnecessary.

J21.0 - Acute Bronchiolitis due to Respiratory Syncytial Virus (RSV): RSV is a predominant virus causing bronchiolitis. This specific code is employed when laboratory tests or clinical symptoms confirm RSV as the causative agent. RSV-induced bronchiolitis can be severe, especially in premature infants or those with underlying health conditions.

J21.8 - Acute Bronchiolitis due to Other Specified Organisms: Numerous pathogens can lead to bronchiolitis. When the condition is attributed to an organism other than RSV, and that organism is specifically identified, this code comes into play. It provides a more detailed diagnostic picture, aiding in targeted treatment strategies.

J84.115 - Follicular Bronchiolitis: This is a rarer form of bronchiolitis, distinguished by lymphoid follicles. It's a chronic condition, often associated with autoimmune diseases or chronic respiratory exposure to certain irritants.

The ICD-10-CM codes facilitate accurate medical billing and play a pivotal role in patient care, guiding healthcare professionals in understanding the patient's condition and tailoring treatment accordingly.

For a comprehensive understanding of how these codes integrate into the broader medical billing landscape, explore our Bronchiolitis ICD Codes.

Which Bronchiolitis ICD codes are Billable?

J21.9: Yes
J21.0: Yes
J21.8: Yes
J84.115: Yes

Clinical Information

Bronchiolitis, predominantly seen in infants and young children, is a significant concern for parents and healthcare providers. This respiratory condition, while common, can sometimes lead to severe complications if not addressed promptly. Here's a more detailed overview:

Nature of the Illness

Bronchiolitis is primarily an inflammation of the bronchioles, the smallest air passages in the lungs. These tiny tubes can easily become inflamed, obstructing airflow and leading to respiratory distress.

Causative Agents

While the Respiratory syncytial virus (RSV) is the leading cause of bronchiolitis, other viruses such as rhinovirus, adenovirus, and influenza can also trigger the condition. It's worth noting that RSV-related bronchiolitis can be particularly severe, especially in premature infants or those with underlying health conditions.

Symptomatic Presentation

The initial symptoms often mimic a common cold, including a runny nose and mild cough.
As the condition progresses, more severe symptoms like wheezing, pronounced coughing, rapid and shallow breathing, and even bluish skin due to lack of oxygen can manifest.
Feeding difficulties and lethargy might also be observed in some cases, especially in younger infants.

Treatment Protocols

There's no specific antiviral treatment for bronchiolitis; the primary approach is supportive care.
Keeping the child hydrated is crucial, as fluids help loosen mucus and maintain good respiratory health.
In more severe cases, hospitalization might be required, especially if the child has difficulty breathing or is dehydrated.
Oxygen therapy and other interventions can ensure open airways and adequate oxygenation.

Prevention

Preventive measures include:

Good hand hygiene.
Avoiding exposure to sick individuals.
Keeping infants away from crowded places during peak bronchiolitis season.

Understanding bronchiolitis is crucial for early detection and intervention, ensuring that affected children receive the care they need promptly.

Synonyms Include

RSV bronchiolitis
Viral bronchiolitis
Pediatric bronchiolitis
Acute lower respiratory infection
Infantile bronchiolitis

Commonly asked questions

When diagnosing a patient with Bronchiolitis or when documenting a patient's medical history with this condition.

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Supportive care, including hydration, oxygen therapy (if needed), and ensuring the patient has open airways.

It provides a standardized way to document and categorize Bronchiolitis's specific type and cause for clinical and billing purposes.

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