D04.121
D04.121 — Carcinoma in situ of skin of left upper eyelid, including canthus
Billable / specific codeICD-10-CMleft
D04.121 is a billable, specific ICD-10-CM code for carcinoma in situ of skin of left upper eyelid, including canthus. It is valid for submission on a claim.
Risk adjustment
D04.121 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
D04.121 is named in 44 Medicare coverage policies — 44 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
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- A56346Billing and Coding: Removal of Benign and Malignant Skin Lesions
Related codes at this level
Codes that share D04.12. If D04.121 is not quite right, the correct code is usually one of these.
Questions about D04.121
- Is D04.121 a billable ICD-10-CM code?
- Yes. D04.121 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does D04.121 sit in the tabular list?
- Neoplasms (C00-D49), in the block In situ neoplasms (D00-D09).