ICD-10 N65.1
Billable / SpecificDisproportion of reconstructed breast
About ICD-10-CM N65.1
ICD-10-CM code N65.1 represents Disproportion of reconstructed breast. This is a billable/specific code in the Genitourinary System chapter (block N65). The 2026 edition of ICD-10-CM N65.1 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under N65.1. Per CMS ICD-10-CM Tabular 2026.
- Breast asymmetry between native breast and reconstructed breast
- Disproportion between native breast and reconstructed breast
Medicare LCD Coverage for N65.1
Local Coverage Determinations (LCDs) from CMS MACs that list N65.1 as a covered diagnosis.
Showing top 10 of 408 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing N65.1.
5 Medicare
1 Aetna
CPT Codes Commonly Billed with N65.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert N65.1 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 |
|---|---|---|
| N65.1 | 6121 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To N65.1
Other codes in section N60-N65 (Disorders of breast).
ICD-10 N65.1, Billing FAQ
Is ICD-10 code N65.1 billable? +
Yes, N65.1 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to N65.1? +
ICD-10 N65.1 includes: Breast asymmetry between native breast and reconstructed breast; Disproportion between native breast and reconstructed breast.
What ICD-9 codes does N65.1 map to? +
Per CMS GEMs, N65.1 maps to ICD-9 codes: 6121. 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 June 1, 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