ICD-9 Diagnosis Code 704.42

Trichilemmal cyst

Diagnosis Code 704.42

ICD-9: 704.42
Short Description: Trichilemmal cyst
Long Description: Trichilemmal cyst
This is the 2014 version of the ICD-9-CM diagnosis code 704.42

Code Classification
  • Diseases of the skin and subcutaneous tissue
    • Other diseases of skin and subcutaneous tissue (700-709)
      • 704 Diseases of hair and hair follicles

Information for Medical Professionals

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Index of Diseases and Injuries
References found for the code 704.42 in the Index of Diseases and Injuries:

    • Cyst (mucus) (retention) (serous) (simple)
      • trichilemmal (proliferating) 704.42

Information for Patients

Benign Tumors

Also called: Benign cancer, Benign neoplasms, Noncancerous tumors

Tumors are abnormal growths in your body. They are made up of extra cells. Normally, cells grow and divide to form new cells as your body needs them. When cells grow old, they die, and new cells take their place. Sometimes, this process goes wrong. New cells form when your body does not need them, and old cells do not die when they should. When these extra cells form a mass, it is called a tumor.

Tumors can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Treatment often involves surgery. Benign tumors usually don't grow back.

NIH: National Cancer Institute

  • Biopsy - polyps
  • Cherry angioma

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Hair Problems

The average person has 5 million hairs. Hair grows all over your body except on your lips, palms, and the soles of your feet. It takes about a month for healthy hair to grow half an inch. Most hairs grow for up to six years and then fall out. New hairs grow in their place.

Hair helps keep you warm. It also protects your eyes, ears and nose from small particles in the air. Common problem with the hair and scalp include hair loss, infections, and flaking.

  • Aging changes in hair and nails
  • Dry hair
  • Excessive or unwanted hair in women
  • Excessive or unwanted hair in women
  • Folliculitis
  • Hot tub folliculitis
  • Skin and hair changes during pregnancy
  • Trichorrhexis nodosa

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