C44.529 ICD-10-CM Code: Squamous cell carcinoma of skin of other part of trunk
C44.529 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · free HCC coding tools
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FY 2026 Apr update / Neoplasms (C00-D49) / Melanoma and other malignant neoplasms of skin (C43-C44)
C44.529
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceSquamous cell carcinoma of skin of other part of trunk
A type of skin cancer (squamous cell carcinoma) that develops on the skin of other areas of the trunk, such as the back, abdomen, or chest wall (excluding breast).
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 C44.529. Check the code and parent instructions in the Code Book.
Excludes 2
OfficialNo Excludes 2 notes are included in this display for C44.529. 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, C44.5
- malignant melanoma of skin (C43.-)Inherited from C44, C44.5
- malignant neoplasm of skin of genital organs (C51-C52, C60.-, C63.2)Inherited from C44, C44.5
- Merkel cell carcinoma (C4A.-)Inherited from C44, C44.5
- anus NOS (C21.0)Inherited from C44, C44.5
- scrotum (C63.2)Inherited from C44, C44.5
Code First
OfficialNo Code First sequencing instructions are included in this display for C44.529. Check the code and parent instructions in the Code Book.
Use Additional
OfficialNo Use Additional Code instructions are included in this display for C44.529. Check the code and parent instructions in the Code Book.
Code Also
OfficialNo Code Also instructions are included in this display for C44.529. 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 C44.529 an HCC code?
No. C44.529 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
- C44.529
- Description
- Squamous cell carcinoma of skin of other part of trunk
- 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
C44.529 is the ICD-10-CM diagnosis code for squamous cell carcinoma of skin of other part of trunk. A type of skin cancer (squamous cell carcinoma) that develops on the skin of other areas of the trunk, such as the back, abdomen, or chest wall (excluding breast). C44.529 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering melanoma and other malignant neoplasms of skin (c43-c44).
C44.529 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.
Use this code only when the specific trunk location is not breast, genitals, or anus.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for C44.529 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when the specific trunk location is not breast, genitals, or anus
- •Document the exact anatomical location on the trunk for clinical clarity