2024 ICD-10-CM Diagnosis Code C55

Malignant neoplasm of uterus, part unspecified

ICD-10-CM Code:
C55
ICD-10 Code for:
Malignant neoplasm of uterus, part unspecified
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

Code Classification

  • Neoplasms
    (C00–D49)
    • Malignant neoplasms of female genital organs
      (C51-C58)
      • Malignant neoplasm of uterus, part unspecified
        (C55)

C55 is a billable diagnosis code used to specify a medical diagnosis of malignant neoplasm of uterus, part unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

This code 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 reference this diagnosis 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.

Approximate Synonyms

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

  • Adenocarcinoma of uterus
  • Adenosarcoma of uterus
  • Carcinoma of uterus
  • Carcinosarcoma of uterus
  • Leiomyosarcoma of uterus
  • Malignant neoplasm of uterus
  • Malignant tumor involving an organ by direct extension from uterus
  • Malignant tumor involving bladder by direct extension from uterus
  • Malignant tumor involving left fallopian tube by direct extension from uterus
  • Malignant tumor involving left ovary by direct extension from uterus
  • Malignant tumor involving rectum by direct extension from uterus
  • Malignant tumor involving right fallopian tube by direct extension from uterus
  • Malignant tumor involving right ovary by direct extension from uterus
  • Malignant tumor involving vagina by direct extension from uterus
  • Malignant tumor involving vulva by direct extension from uterus
  • Primary adenosarcoma of uterus
  • Primary carcinosarcoma of uterus
  • Primary malignant neoplasm of uterus
  • Primary myosarcoma of uterus
  • Sarcoma of uterus

Clinical Classification

Code Edits

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

  • Diagnoses for females only - The Medicare Code Editor detects inconsistencies between a patient’s sex and any diagnosis on the patient’s record, these edits apply to FEMALES only .

Convert C55 to ICD-9-CM

  • ICD-9-CM Code: 179 - Malig neopl uterus NOS

Table of Neoplasms

This code is referenced 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

Patient Education


Uterine 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:

  • Abnormal vaginal bleeding or discharge
  • Trouble urinating
  • Pelvic pain
  • Pain during intercourse

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 in MedlinePlus]

Endometrial Cancer Treatment (PDQ®)

Learn about endometrial cancer risk factors, signs and symptoms, tests to diagnose, factors affecting prognosis, staging, and treatment.
[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.