C44.311 ICD-10-CM Code: Basal cell carcinoma of skin of nose
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FY 2026 Apr update / Neoplasms (C00-D49) / Melanoma and other malignant neoplasms of skin (C43-C44)
C44.311
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceBasal cell carcinoma of skin of nose
This is a type of skin cancer that starts in the basal cells (the deepest layer of skin cells) on the nose. It is the most common form of skin cancer and typically grows slowly.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
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Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for C44.311 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for C44.311 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for C44.311 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for C44.311 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for C44.311 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for C44.311 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for C44.311 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is C44.311 an HCC code?
No. C44.311 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
C44.311 is the ICD-10-CM diagnosis code for basal cell carcinoma of skin of nose. This is a type of skin cancer that starts in the basal cells (the deepest layer of skin cells) on the nose. It is the most common form of skin cancer and typically grows slowly. C44.311 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering melanoma and other malignant neoplasms of skin (c43-c44).
C44.311 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Ensure the laterality is specified - C44.311 is for the right side of the nose; use C44.312 for left side and C44.319 for unspecified side.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for C44.311 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.