ICD-10 D23.21
Billable / SpecificOther benign neoplasm of skin of right ear and external auricular canal
About ICD-10-CM D23.21
ICD-10-CM code D23.21 represents Other benign neoplasm of skin of right ear and external auricular canal. This is a billable/specific code in the Neoplasms chapter (block D23). The 2026 edition of ICD-10-CM D23.21 became effective on October 1, 2025.
Medicare LCD Coverage for D23.21
Local Coverage Determinations (LCDs) from CMS MACs that list D23.21 as a covered diagnosis.
Showing top 10 of 343 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing D23.21.
5 Medicare
CPT Codes Commonly Billed with D23.21
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 11305 CMS LCD: Billing and Coding: Removal of Benign Skin Lesions CMS LCD
- 11404 CMS LCD: Billing and Coding: Removal of Benign Skin Lesions CMS LCD
- 11444 CMS LCD: Billing and Coding: Removal of Benign Skin Lesions CMS LCD
- 11403 CMS LCD: Billing and Coding: Removal of Benign Skin Lesions CMS LCD
- 11442 CMS LCD: Billing and Coding: Removal of Benign Skin Lesions CMS LCD
- 11307 CMS LCD: Billing and Coding: Removal of Benign Skin Lesions CMS LCD
- 11301 CMS LCD: Billing and Coding: Removal of Benign Skin Lesions CMS LCD
- 17108 CMS LCD: Billing and Coding: Removal of Benign Skin Lesions CMS LCD
- 17111 CMS LCD: Billing and Coding: Removal of Benign Skin Lesions CMS LCD
- 11420 CMS LCD: Billing and Coding: Removal of Benign Skin Lesions CMS LCD
Convert D23.21 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 |
|---|---|---|
| D23.21 | 2162 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To D23.21
Other codes in section D10-D36 (Benign neoplasms, except benign neuroendocrine tumors).
ICD-10 D23.21, Billing FAQ
Is ICD-10 code D23.21 billable? +
Yes, D23.21 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 D23.21? +
Procedures frequently paired with D23.21 include: 11305, 11404, 11444, 11403, 11442.
What ICD-9 codes does D23.21 map to? +
Per CMS GEMs, D23.21 maps to ICD-9 codes: 2162. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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