Valid for Submission
C44.500 is a billable diagnosis code used to specify a medical diagnosis of unspecified malignant neoplasm of anal skin. The code C44.500 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.
The ICD-10-CM code C44.500 might also be used to specify conditions or terms like carcinoma of anus, carcinoma of skin of anus, primary malignant neoplasm of perianal skin, primary malignant neoplasm of skin of perineum or primary malignant neoplasm of soft tissues of perineum.
The following anatomical sites found in the Table of Neoplasms apply to this code given the correct histological behavior: anus, anal margin [See Also: Neoplasm, anus, skin] ; anus, anal skin ; perianal (skin) [See Also: Neoplasm, anus, skin] ; skin NOS anus ; skin NOS perianal [See Also: Neoplasm, skin, anus] ; skin NOS perineum [See Also: Neoplasm, skin, anus] ; etc
Unspecified diagnosis codes like C44.500 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code C44.500:
Inclusion TermsInclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Unspecified malignant neoplasm of anal margin
- Unspecified malignant neoplasm of perianal skin
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Carcinoma of anus
- Carcinoma of skin of anus
- Primary malignant neoplasm of perianal skin
- Primary malignant neoplasm of skin of perineum
- Primary malignant neoplasm of soft tissues of perineum
Diagnostic Related Groups - MS-DRG Mapping
|MS-DRG||MS-DRG Title||MCD||Relative Weight|
|606||MINOR SKIN DISORDERS WITH MCC||09||1.511|
|607||MINOR SKIN DISORDERS WITHOUT MCC||09||0.8256|
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.
Convert C44.500 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code C44.500 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Table of Neoplasms
The code C44.500 is included in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.
Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.
»margin [See Also: Neoplasm, anus, skin]
|»perianal (skin) [See Also: Neoplasm, anus, skin]||C44.500||C79.2||D04.5||D23.5||D48.5||D49.2|
»perianal [See Also: Neoplasm, skin, anus]
»perineum [See Also: Neoplasm, skin, anus]
Information for Patients
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
[Learn More in MedlinePlus]