J45.909
Billable

Unspecified asthma, uncomplicated

Billable / Specific Code

What is Unspecified asthma, uncomplicated?

ICD-10-CM J45.909 is the diagnosis code for Unspecified asthma, uncomplicated. This code falls under the section "Chronic lower respiratory diseases" within Chapter 10 — Diseases of the respiratory system (J00-J99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

💡 Inclusions
â„šī¸ Excludes2

Coding Guidelines for J45.909

✅ This Code Includes

  • Asthma NOS

â„šī¸ Type 2 Excludes (Code separately if applicable)

The following conditions are not included in J45.909. If the patient has both, code each condition separately:

  • lung diseases due to external agents (J60-J70)

ICD-10-CM Code Hierarchy

Understanding where J45.909 sits in the ICD-10-CM classification helps ensure proper coding:

Current CodeJ45.909 — Unspecified asthma, uncomplicated
Related Codes

Frequently Asked Questions

Is J45.909 a billable ICD-10-CM code?

Yes, J45.909 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What does J45.909 mean?

J45.909 is the ICD-10-CM diagnosis code for "Unspecified asthma, uncomplicated". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of J45.909?

The parent code of J45.909 is J45.90 ("Unspecified asthma"). J45.909 provides a more specific classification within this category.

What section is J45.909 in?

J45.909 is located in Section J40-J4A — "Chronic lower respiratory diseases" within Chapter 10 of the ICD-10-CM Tabular List.

When should I use J45.909?

Use J45.909 when the patients documented diagnosis matches "Unspecified asthma, uncomplicated" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Unspecified asthma, uncomplicated?

The ICD-10-CM code for Unspecified asthma, uncomplicated is J45.909.

Can J45.909 be used for primary diagnosis?

Yes, J45.909 can be used as a primary diagnosis code since it is billable and specific.

What chapter is J45.909 in?

J45.909 is in Chapter 10 of the ICD-10-CM Tabular List.

Is J45.909 valid for 2026?

Yes, J45.909 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousJ45.902Unspecified asthma with status asthmaticusNext →J45.99Other asthma
Code Details
J45.909
Unspecified asthma, uncomplicated
Billable / Specific Code
10 — Diseases of the respiratory system (J00-J99)
J40-J4A — Chronic lower respiratory diseases
2026 ICD-10-CM