ICD-10 J33.9
Billable / SpecificNasal polyp, unspecified
About ICD-10-CM J33.9
ICD-10-CM code J33.9 represents Nasal polyp, unspecified. This is a billable/specific code in the Respiratory System chapter (block J33). The 2026 edition of ICD-10-CM J33.9 became effective on October 1, 2025.
Medicare LCD Coverage for J33.9
Local Coverage Determinations (LCDs) from CMS MACs that list J33.9 as a covered diagnosis.
Showing top 10 of 40 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing J33.9.
3 Aetna
2 Cigna
3 Medicare
CPT Codes Commonly Billed with J33.9
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 31231 Nasal endoscopy diagnostic — acute sinusitis, chronic sinusitis, nasal polyps, septal deviation, epistaxis, nasal obstruction, nasal discharge ENT
Convert J33.9 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 |
|---|---|---|
| J33.9 | 4719 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To J33.9
Other codes in section J30-J39 (Other diseases of upper respiratory tract).
ICD-10 J33.9, Billing FAQ
Is ICD-10 code J33.9 billable? +
Yes, J33.9 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with J33.9? +
Procedures frequently paired with J33.9 include: 31231.
What ICD-9 codes does J33.9 map to? +
Per CMS GEMs, J33.9 maps to ICD-9 codes: 4719. 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 July 17, 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