2026 ICD-10-CM Diagnosis Code C44Other and unspecified malignant neoplasm of skin

ICD-10-CM Codes›C00–D49›C43-C44›C44

ICD-10-CM C44
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C44 is a non-billable ICD-10-CM category code for other and unspecified malignant neoplasm of skin, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C44.00, C44.01, C44.02, and C44.09.

Code Identity

ICD-10-CM Code
C44
Billable Status
No — Non-Billable Category
Code Describes
Other and unspecified malignant neoplasm of skin
Short Description
Other and unspecified malignant neoplasm of skin
Same as the full description in the CMS dataset.
Chapter
C43-C44
Melanoma and other malignant neoplasms of skin

Code Classification

ChapterC00–D49Neoplasms
SectionC43-C44Melanoma and other malignant neoplasms of skin
CategoryC44Other and unspecified malignant neoplasm of skin
This CodeC44Other and unspecified malignant neoplasm of skin

Specific Coding for Other and unspecified malignant neoplasm of skinOverview

Non-specific codes like C44 require more characters. Use one of these billable codes instead:

  • C44.0 for Other and unspecified malignant neoplasm of skin of lip

  • Use C44.00 for Unspecified malignant neoplasm of skin of lip

  • Use C44.01 for Basal cell carcinoma of skin of lip

  • Use C44.02 for Squamous cell carcinoma of skin of lip

  • Use C44.09 for Other specified malignant neoplasm of skin of lip

  • C44.1 for Other and unspecified malignant neoplasm of skin of eyelid, including canthus

  • C44.10 for Unspecified malignant neoplasm of skin of eyelid, including canthus

  • C44.11 for Basal cell carcinoma of skin of eyelid, including canthus

  • C44.12 for Squamous cell carcinoma of skin of eyelid, including canthus

  • C44.13 for Sebaceous cell carcinoma of skin of eyelid, including canthus

  • C44.19 for Other specified malignant neoplasm of skin of eyelid, including canthus

  • C44.2 for Other and unspecified malignant neoplasm of skin of ear and external auricular canal

  • C44.20 for Unspecified malignant neoplasm of skin of ear and external auricular canal

  • C44.21 for Basal cell carcinoma of skin of ear and external auricular canal

  • C44.22 for Squamous cell carcinoma of skin of ear and external auricular canal

  • C44.29 for Other specified malignant neoplasm of skin of ear and external auricular canal

  • C44.3 for Other and unspecified malignant neoplasm of skin of other and unspecified parts of face

  • C44.30 for Unspecified malignant neoplasm of skin of other and unspecified parts of face

  • C44.31 for Basal cell carcinoma of skin of other and unspecified parts of face

  • C44.32 for Squamous cell carcinoma of skin of other and unspecified parts of face

  • C44.39 for Other specified malignant neoplasm of skin of other and unspecified parts of face

  • C44.4 for Other and unspecified malignant neoplasm of skin of scalp and neck

  • Use C44.40 for Unspecified malignant neoplasm of skin of scalp and neck

  • Use C44.41 for Basal cell carcinoma of skin of scalp and neck

  • Use C44.42 for Squamous cell carcinoma of skin of scalp and neck

  • Use C44.49 for Other specified malignant neoplasm of skin of scalp and neck

  • C44.5 for Other and unspecified malignant neoplasm of skin of trunk

  • C44.50 for Unspecified malignant neoplasm of skin of trunk

  • C44.51 for Basal cell carcinoma of skin of trunk

  • C44.52 for Squamous cell carcinoma of skin of trunk

  • C44.59 for Other specified malignant neoplasm of skin of trunk

  • C44.6 for Other and unspecified malignant neoplasm of skin of upper limb, including shoulder

  • C44.60 for Unspecified malignant neoplasm of skin of upper limb, including shoulder

  • C44.61 for Basal cell carcinoma of skin of upper limb, including shoulder

  • C44.62 for Squamous cell carcinoma of skin of upper limb, including shoulder

  • C44.69 for Other specified malignant neoplasm of skin of upper limb, including shoulder

  • C44.7 for Other and unspecified malignant neoplasm of skin of lower limb, including hip

  • C44.70 for Unspecified malignant neoplasm of skin of lower limb, including hip

  • C44.71 for Basal cell carcinoma of skin of lower limb, including hip

  • C44.72 for Squamous cell carcinoma of skin of lower limb, including hip

  • C44.79 for Other specified malignant neoplasm of skin of lower limb, including hip

  • C44.8 for Other and unspecified malignant neoplasm of overlapping sites of skin

  • Use C44.80 for Unspecified malignant neoplasm of overlapping sites of skin

  • Use C44.81 for Basal cell carcinoma of overlapping sites of skin

  • Use C44.82 for Squamous cell carcinoma of overlapping sites of skin

  • Use C44.89 for Other specified malignant neoplasm of overlapping sites of skin

  • C44.9 for Other and unspecified malignant neoplasm of skin, unspecified

  • Use C44.90 for Unspecified malignant neoplasm of skin, unspecified

  • Use C44.91 for Basal cell carcinoma of skin, unspecified

  • Use C44.92 for Squamous cell carcinoma of skin, unspecified

  • Use C44.99 for Other specified malignant neoplasm of skin, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • malignant neoplasm of sebaceous glands
  • malignant neoplasm of sweat glands

Type 1 Excludes

  • Kaposi's sarcoma of skin C46.0
  • malignant melanoma of skin C43
  • malignant neoplasm of skin of genital organs C51 C52 C60 C63.2
  • Merkel cell carcinoma C4A

Patient EducationClinical

Skin Cancer

Skin cancer is the most common form of cancer in the United States. The two most common types are basal cell cancer and squamous cell cancer. They usually form on the head, face, neck, hands, and arms. Another type of skin cancer, melanoma, is more dangerous but less common.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C44Overview

Is C44 (Other and unspecified malignant neoplasm of skin) a billable code?

No. This is a category header that groups the codes for other and unspecified malignant neoplasm of skin, and headers cannot be submitted on claims. Claims for other and unspecified malignant neoplasm of skin need a more specific code from this category, such as C44.00, C44.01, and C44.02.