ICD-10 D09.21
Billable / SpecificCarcinoma in situ of right eye
About ICD-10-CM D09.21
ICD-10-CM code D09.21 represents Carcinoma in situ of right eye. This is a billable/specific code in the Neoplasms chapter (block D09). The 2026 edition of ICD-10-CM D09.21 became effective on October 1, 2025.
Medicare LCD Coverage for D09.21
Local Coverage Determinations (LCDs) from CMS MACs that list D09.21 as a covered diagnosis.
Showing top 10 of 416 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing D09.21.
5 Medicare
CPT Codes Commonly Billed with D09.21
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 92228 CMS LCD: Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography) CMS LCD
- 92201 CMS LCD: Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography) CMS LCD
- 92202 CMS LCD: Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography) CMS LCD
- 92250 CMS LCD: Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography) CMS LCD
- 92227 CMS LCD: Billing and Coding: Ophthalmology: Posterior Segment Imaging (Extended Ophthalmoscopy and Fundus Photography) CMS LCD
Convert D09.21 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 |
|---|---|---|
| D09.21 | 2340 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To D09.21
Other codes in section D00-D09 (In situ neoplasms).
ICD-10 D09.21, Billing FAQ
Is ICD-10 code D09.21 billable? +
Yes, D09.21 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 D09.21? +
Procedures frequently paired with D09.21 include: 92228, 92201, 92202, 92250, 92227.
What ICD-9 codes does D09.21 map to? +
Per CMS GEMs, D09.21 maps to ICD-9 codes: 2340. 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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