ICD-10 J45.32
Billable / Specific CCMild persistent asthma with status asthmaticus
About ICD-10-CM J45.32
ICD-10-CM code J45.32 represents Mild persistent asthma with status asthmaticus. This is a billable/specific code in the Respiratory System chapter (block J45). The 2026 edition of ICD-10-CM J45.32 became effective on October 1, 2025.
Coding Tips for J45.32
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
J45.32 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inpatient DRG Impact, CC
codes Mild persistent asthma with status asthmaticus. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for J45.32
Local Coverage Determinations (LCDs) from CMS MACs that list J45.32 as a covered diagnosis.
Showing top 10 of 1,123 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing J45.32.
5 Medicare
CPT Codes Commonly Billed with J45.32
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 95144 CMS LCD: Billing and Coding: Allergen Immunotherapy (AIT) with Subcutaneous Immunotherapy (SCIT) CMS LCD
- 95180 CMS LCD: Billing and Coding: Allergen Immunotherapy (AIT) with Subcutaneous Immunotherapy (SCIT) CMS LCD
- 95117 CMS LCD: Billing and Coding: Allergen Immunotherapy (AIT) with Subcutaneous Immunotherapy (SCIT) CMS LCD
- 86003 CMS LCD: Billing and Coding: RAST Type Tests CMS LCD
- 86001 CMS LCD: Billing and Coding: RAST Type Tests CMS LCD
- 86005 CMS LCD: Billing and Coding: RAST Type Tests CMS LCD
- 95070 CMS LCD: Billing and Coding: Allergy Testing CMS LCD
- 95052 CMS LCD: Billing and Coding: Allergy Testing CMS LCD
- 95065 CMS LCD: Billing and Coding: Allergy Testing CMS LCD
- 95027 CMS LCD: Billing and Coding: Allergy Testing CMS LCD
Convert J45.32 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| J45.32 | 49301 | 10000 |
| J45.32 | 49311 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To J45.32
Other codes in section J40-J4A (Chronic lower respiratory diseases).
ICD-10 J45.32, Billing FAQ
Is ICD-10 code J45.32 billable? +
Yes, J45.32 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
Is J45.32 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with J45.32? +
Procedures frequently paired with J45.32 include: 95144, 95180, 95117, 86003, 86001.
What ICD-9 codes does J45.32 map to? +
Per CMS GEMs, J45.32 maps to ICD-9 codes: 49301, 49311. Useful for legacy data review and historical claim analysis.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team