J45.4

Non-Billable

ChapterJ00–J99

Ranksubcategory

Official Description

Moderate persistent asthma

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 10: Diseases of the Respiratory System (J00-J99).

General instructions are available for the parent sections:

View CH10 Notes View J40-J4A Notes View J45 Notes

Clinical Hierarchy

CH10Diseases of the respiratory system (J00-J99)

J40-J4AChronic lower respiratory diseases (J40-J4A)

J45Asthma

J45.4Moderate persistent asthma

J45.40Moderate persistent asthma, uncomplicated

J45.41Moderate persistent asthma with (acute) exacerbation

J45.42Moderate persistent asthma with status asthmaticus

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to J45.4:

categoryJ45

Asthma

View context instructions

blockJ40-J4A

Chronic lower respiratory diseases (J40-J4A)

View context instructions

chapterCH10

Diseases of the respiratory system (J00-J99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to J45.4. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

6 raw paths

Asthma, asthmatic (bronchial) (catarrh) (spasmodic)6 unique routes

moderate persistent→J45.4(3 variants)

with(2 variants)

exacerbation (acute)→J45.4

status asthmaticus→J45.4

persistent(3 variants)

moderate→J45.4(3 variants)

with(2 variants)

exacerbation (acute)→J45.4

status asthmaticus→J45.4

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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Find surgical and procedural codes related to Moderate persistent asthma.

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