C44.1022 ICD-10-CM Code: Unspecified malignant neoplasm of skin of right lower eyelid, including canthus
C44.1022 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools
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FY 2026 Apr update / Neoplasms (C00-D49) / Melanoma and other malignant neoplasms of skin (C43-C44)
C44.1022
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceUnspecified malignant neoplasm of skin of right lower eyelid, including canthus
A malignant skin cancer on the right lower eyelid, including the corner area where the eyelids meet.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialNo inclusion terms are included in this display for C44.1022. Check the code and parent instructions in the Code Book.
Excludes 2
OfficialNo Excludes 2 notes are included in this display for C44.1022. Check the code and parent instructions in the Code Book.
Related Codes
Includes
Official- malignant neoplasm of sebaceous glandsInherited from C44
- malignant neoplasm of sweat glandsInherited from C44
Excludes 1
Official- Kaposi's sarcoma of skin (C46.0)Inherited from C44, C44.1
- malignant melanoma of skin (C43.-)Inherited from C44, C44.1
- malignant neoplasm of skin of genital organs (C51-C52, C60.-, C63.2)Inherited from C44, C44.1
- Merkel cell carcinoma (C4A.-)Inherited from C44, C44.1
- connective tissue of eyelid (C49.0)Inherited from C44, C44.1
Code First
OfficialNo Code First sequencing instructions are included in this display for C44.1022. Check the code and parent instructions in the Code Book.
Use Additional
OfficialNo Use Additional Code instructions are included in this display for C44.1022. Check the code and parent instructions in the Code Book.
Code Also
OfficialNo Code Also instructions are included in this display for C44.1022. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is C44.1022 an HCC code?
No. C44.1022 is a billable ICD-10-CM code with no mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models.
- Code
- C44.1022
- Description
- Unspecified malignant neoplasm of skin of right lower eyelid, including canthus
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
C44.1022 is the ICD-10-CM diagnosis code for unspecified malignant neoplasm of skin of right lower eyelid, including canthus. A malignant skin cancer on the right lower eyelid, including the corner area where the eyelids meet. C44.1022 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering melanoma and other malignant neoplasms of skin (c43-c44).
C44.1022 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.
Confirm documentation specifies right side and lower eyelid to differentiate from upper eyelid codes.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for C44.1022 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Confirm documentation specifies right side and lower eyelid to differentiate from upper eyelid codes
- •Lower eyelid cancers may have different surgical considerations than upper eyelid lesions; document extent carefully