2021 ICD-10-CM Code C55

Malignant neoplasm of uterus, part unspecified

  1. ICD-10-CM Index
  2. Chapter: C00–D48
  3. Section: C51-C58
  4. Block: C55
  5. C55 - Malignant neoplasm of uterus, part unspecified
Version 2021
Billable Code
Unspecified Code
Diagnoses For Females Only
MS-DRG Mapping
Neoplasm Malignant Primary

Valid for Submission

C55 is a billable diagnosis code used to specify a medical diagnosis of malignant neoplasm of uterus, part unspecified. The code C55 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code C55 might also be used to specify conditions or terms like adenocarcinoma of uterus, adenosarcoma of uterus, carcinoma of uterus, carcinosarcoma of uterus, gestational trophoblast tnm finding , gestational trophoblast tnm finding, etc.

The code C55 is applicable to female patients only. It is clinically and virtually impossible to use this code on a non-female patient.

The following anatomical sites found in the Table of Neoplasms apply to this code given the correct histological behavior: Neoplasm, neoplastic uterus, uteri, uterine .

Unspecified diagnosis codes like C55 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.

ICD-10:C55
Short Description:Malignant neoplasm of uterus, part unspecified
Long Description:Malignant neoplasm of uterus, part unspecified

Code Classification

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Convert C55 to ICD-9 Code

Table of Neoplasms

The code C55 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.

Neoplasm, neoplastic Malignant
Primary		 Malignant
Secondary		 CaInSitu Benign Uncertain
Behavior		 Unspecified
Behavior
»Neoplasm, neoplastic
  »uterus, uteri, uterine
C55C79.82D07.0D26.9D39.0D49.59

Information for Patients


Uterine Cancer

Also called: Endometrial cancer

The uterus, or womb, is the place where a baby grows when a women is pregnant. There are different types of uterine cancer. The most common type starts in the endometrium, the lining of the uterus. This type is also called endometrial cancer.

The symptoms of uterine cancer include

Uterine cancer usually happens after menopause. It is more common in women who have obesity. You also have a higher risk if you took estrogen-only hormone replacement therapy (menopausal hormone therapy) for many years.

Tests to find uterine cancer include a pelvic exam, imaging tests, and a biopsy. The most common treatment is a hysterectomy, which is surgery to remove the uterus. Sometimes the surgery also removes the ovaries and fallopian tubes. Other treatments include hormone therapy, radiation therapy, and chemotherapy. Some women get more than one type of treatment.

NIH: National Cancer Institute


[Learn More]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)

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Related Codes

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