J45.3

Non-billable

Mild persistent asthma

J45.3 is the ICD-10-CM code for Mild persistent asthma. It is a non-billable category code — use a more specific child code such as J45.30 for billing.

Status
Header (non-billable)
Chapter
J00-J99
Parent
J45
Subcodes
3
Edition
FY2026

J00-J99 Diseases of the respiratory system

What this means — in plain language

MedlinePlus · NIH

What is asthma? Asthma is a chronic (long-term) lung disease. It affects your airways, the tubes that carry air in and out of your lungs. When you have asthma, your airways can become inflamed and narrowed. This can cause wheezing, coughing , and tightness in your chest. When these symptoms get worse than usual, it is called an asthma attack or flare-up. What causes asthma? The exact cause of asthma is unknown.…

Read more about Asthma at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

No additional coding notes for this code.

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code J45.3?
J45.3 is the ICD-10-CM code for "Mild persistent asthma". It falls under J00-J99 Diseases of the respiratory system.
Is J45.3 a billable code?
No — J45.3 is a non-billable header code. Use a more specific child code (such as J45.30) for billing.
What are the subcodes of J45.3?
J45.3 has 3 more specific child codes, including J45.30, J45.31, J45.32.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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