ICD-10 Diagnosis Code C44.90

Unspecified malignant neoplasm of skin, unspecified

Diagnosis Code C44.90

ICD-10: C44.90
Short Description: Unspecified malignant neoplasm of skin, unspecified
Long Description: Unspecified malignant neoplasm of skin, unspecified
This is the 2017 version of the ICD-10-CM diagnosis code C44.90

Code Classification
  • Neoplasms
    • Melanoma and other malignant neoplasms of skin (C43-C44)
      • Other and unspecified malignant neoplasm of skin (C44)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code C44.90 is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
  • 173.90 - Malig neo skin site NOS

  • Adverse effect from psoralen and long-wave ultraviolet radiation photochemotherapy
  • Arsenic-induced skin malignancy
  • Carcinoma of bone, connective tissue, skin and breast
  • Local recurrence of malignant tumor of skin
  • Malignant epithelial neoplasm of skin
  • Malignant neoplasm of bone, connective tissue, skin and breast
  • Malignant neoplasm of nail apparatus
  • Malignant neoplasm of skin
  • Malignant skin tumor with adnexal differentiation
  • Malignant skin tumor with eccrine differentiation
  • Malignant tumor of dermis
  • Malignant vascular tumor of skin
  • Metastasis from malignant tumor of skin
  • Neoplasm of sweat gland
  • Primary malignant neoplasm of sebaceous gland
  • Primary malignant neoplasm of skin
  • Primary malignant neoplasm of skin with adnexal differentiation
  • Primary malignant neoplasm of sweat gland
  • Psoralen and long-wave ultraviolet radiation therapy-associated skin malignancy
  • Radiation-induced skin malignancy
  • Skin disease caused by arsenic
  • Torré-Muir syndrome
  • Toxicoderma
  • Tumor of skin with sebaceous differentiation
  • Undifferentiated adnexal carcinoma of skin

Index of Diseases and Injuries
References found for the code C44.90 in the Index of Diseases and Injuries:

Information for Patients

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.

Anyone can get skin cancer, but it is more common in people who

  • Spend a lot of time in the sun or have been sunburned
  • Have light-colored skin, hair and eyes
  • Have a family member with skin cancer
  • Are over age 50

You should have your doctor check any suspicious skin markings and any changes in the way your skin looks. Treatment is more likely to work well when cancer is found early. If not treated, some types of skin cancer cells can spread to other tissues and organs. Treatments include surgery, radiation therapy, chemotherapy, photodynamic therapy (PDT), and biologic therapy. PDT uses a drug and a type of laser light to kill cancer cells. Biologic therapy boosts your body's own ability to fight cancer.

NIH: National Cancer Institute

  • Actinic keratosis
  • Basal cell carcinoma
  • Mohs micrographic surgery
  • Skin lesion biopsy
  • Skin self-exam
  • Squamous cell skin cancer
  • What to Know about External Beam Radiation Therapy - NIH - Easy-to-Read (National Cancer Institute)

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