J45.4
Non-Billable

Moderate persistent asthma

Non-Billable / Non-Specific Code

What is Moderate persistent asthma?

ICD-10-CM J45.4 is the diagnosis code for Moderate persistent asthma. This code falls under the section "Chronic lower respiratory diseases" within Chapter 10 — Diseases of the respiratory system (J00-J99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

Coding Guidelines for J45.4

Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.

ICD-10-CM Code Hierarchy

Understanding where J45.4 sits in the ICD-10-CM classification helps ensure proper coding:

Parent CodeJ45 — Asthma
Current CodeJ45.4 — Moderate persistent asthma
Sub-Codes (3)
Sub-Codes 3 entries
J45.40Moderate persistent asthma, uncomplicatedBillableJ45.41Moderate persistent asthma with (acute) exacerbationBillableJ45.42Moderate persistent asthma with status asthmaticusBillable
Related Codes

Frequently Asked Questions

Is J45.4 a billable ICD-10-CM code?

No, J45.4 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does J45.4 mean?

J45.4 is the ICD-10-CM diagnosis code for "Moderate persistent asthma". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of J45.4?

The parent code of J45.4 is J45 ("Asthma"). J45.4 provides a more specific classification within this category.

What section is J45.4 in?

J45.4 is located in Section J40-J4A — "Chronic lower respiratory diseases" within Chapter 10 of the ICD-10-CM Tabular List.

What are the sub-codes of J45.4?

J45.4 has 3 sub-code(s) that provide more specific detail: J45.40, J45.41, J45.42.

When should I use J45.4?

Use J45.4 when the patients documented diagnosis matches "Moderate persistent asthma" 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 Moderate persistent asthma?

The ICD-10-CM code for Moderate persistent asthma is J45.4.

Can J45.4 be used for primary diagnosis?

No, J45.4 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is J45.4 in?

J45.4 is in Chapter 10 of the ICD-10-CM Tabular List.

Is J45.4 valid for 2026?

Yes, J45.4 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousJ45.32Mild persistent asthma with status asthmaticusNext →J45.40Moderate persistent asthma, uncomplicated
Code Details
J45.4
Moderate persistent asthma
Non-Billable / Non-Specific Code
10 — Diseases of the respiratory system (J00-J99)
J40-J4A — Chronic lower respiratory diseases
2026 ICD-10-CM