J45.4 (Moderate persistent asthma) is an umbrella ICD-10-CM medical diagnosis code in the Diseases of the respiratory system chapter. It identifies cases of moderate persistent asthma for clinical documentation, billing and epidemiological tracking.

ICD-10-CM · Category

J45.4 — Moderate persistent asthma

Chapter J00-J99: Diseases of the respiratory system

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Sub-codes under J45.4

J45.40Moderate persistent asthma, uncomplicatedJ45.41Moderate persistent asthma with (acute) exacerbationJ45.42Moderate persistent asthma with status asthmaticus

Related diagnoses

J45.2Mild intermittent asthmaJ45.3Mild persistent asthmaJ45.5Severe persistent asthmaJ45.9Other and unspecified asthma

Common questions about J45.4 (Moderate persistent asthma)

What does ICD-10 code J45.4 mean?
J45.4 is the ICD-10-CM 2025 code for Moderate persistent asthma. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is J45.4 a billable diagnosis code?
J45.4 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under J45.4. Browse the sub-codes listed on this page.
Which ICD-10 chapter does J45.4 belong to?
J45.4 belongs to the chapter "Diseases of the respiratory system" (codes J00-J99). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Moderate persistent asthma?
For a plain-language explanation of Moderate persistent asthma, ask GoDavaii's Health AI - it explains medical conditions in 22+ Indian languages, free, with no signup. Tap "Ask GoDavaii AI about Moderate persistent asthma" above to get a personalised answer.

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗