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  1. Chapter: C00–D48
  2. Section: C51-C58
  3. Block: C55
  4. C55 - Malignant neoplasm of uterus, part unspecified

ICD-10 Diagnosis Code C55

Malignant neoplasm of uterus, part unspecified

Diagnosis Code C55

ICD-10: C55
Short Description: Malignant neoplasm of uterus, part unspecified
Long Description: Malignant neoplasm of uterus, part unspecified
This is the 2019 version of the ICD-10-CM diagnosis code C55

Valid for Submission
The code C55 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Neoplasms (C00–D48)
    • Malignant neoplasms of female genital organs (C51-C58)
      • Malignant neoplasm of uterus, part unspecified (C55)


Version 2019 Billable Code Diagnoses For Females Only Neoplasm Malignant Primary

Information for Medical Professionals


Code Edits
The following edits are applicable to this code:
Diagnoses for females only - Diagnoses for females only.

Diagnostic Related Groups
The diagnosis code C55 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)

  • 736 - UTERINE AND ADNEXA PROCEDURES FOR OVARIAN OR ADNEXAL MALIGNANCY WITH MCC
  • 737 - UTERINE AND ADNEXA PROCEDURES FOR OVARIAN OR ADNEXAL MALIGNANCY WITH CC
  • 738 - UTERINE AND ADNEXA PROCEDURES FOR OVARIAN OR ADNEXAL MALIGNANCY WITHOUT CC/MCC
  • 739 - UTERINE, ADNEXA PROCEDURES FOR NON-OVARIAN AND NON-ADNEXAL MALIGNANCY WITH MCC
  • 740 - UTERINE, ADNEXA PROCEDURES FOR NON-OVARIAN AND NON-ADNEXAL MALIGNANCY WITH CC
  • 741 - UTERINE, ADNEXA PROCEDURES FOR NON-OVARIAN AND NON-ADNEXAL MALIGNANCY WITHOUT CC/MCC

Convert to ICD-9
  • 179 - Malig neopl uterus NOS

Synonyms
  • Adenocarcinoma of uterus
  • Adenosarcoma of uterus
  • Carcinoma of uterus
  • Carcinosarcoma of uterus
  • Gestational trophoblast TNM finding
  • Gestational trophoblast TNM finding
  • Leiomyosarcoma of uterus
  • Malignant neoplasm of uterus
  • Malignant tumor involving an organ by direct extension from uterus
  • Malignant tumor involving an organ by separate metastasis from uterus
  • Malignant tumor involving bladder by direct extension from uterus
  • Malignant tumor involving bladder by separate metastasis from uterus
  • Malignant tumor involving left fallopian tube by direct extension from uterus
  • Malignant tumor involving left fallopian tube by separate metastasis from uterus
  • Malignant tumor involving left ovary by direct extension from uterus
  • Malignant tumor involving left ovary by separate metastasis uterus
  • Malignant tumor involving rectum by direct extension from uterus
  • Malignant tumor involving rectum by separate metastasis from uterus
  • Malignant tumor involving right fallopian tube by direct extension from uterus
  • Malignant tumor involving right fallopian tube by separate metastasis from uterus
  • Malignant tumor involving right ovary by direct extension from uterus
  • Malignant tumor involving right ovary by separate metastasis from uterus
  • Malignant tumor involving vagina by direct extension from uterus
  • Malignant tumor involving vagina by separate metastasis from uterus
  • Malignant tumor involving vulva by direct extension from uterus
  • Malignant tumor involving vulva by separate metastasis from uterus
  • Metastasis from malignant tumor of uterus
  • Primary malignant neoplasm of uterus
  • Primary myosarcoma of uterus
  • pT1
  • pT2
  • Sarcoma of uterus
  • Secondary malignant neoplasm of left fallopian tube
  • Secondary malignant neoplasm of left ovary
  • Secondary malignant neoplasm of rectum
  • Secondary malignant neoplasm of right fallopian tube
  • Secondary malignant neoplasm of right ovary
  • Secondary malignant neoplasm of vagina
  • Secondary malignant neoplasm of vulva
  • T1 : Trophoblastic disease confined to uterus
  • T1 : Trophoblastic disease confined to uterus with no risk factors
  • T1 : Trophoblastic disease confined to uterus with one risk factor
  • T1 : Trophoblastic disease confined to uterus with two risk factors
  • T2
  • T2 : Trophoblast: GTT extends outside of the uterus but limited to genital structures with one risk factor
  • T2 : Trophoblast: GTT extends outside of the uterus but limited to genital structures with two risk factors
  • T2 : Trophoblast: GTT involving genital structure without risk factors

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.

The Tabular must be reviewed for the complete diagnosis code.

Neoplasm, neoplastic Malignant
Primary		 Malignant
Secondary		 CaInSitu Benign Uncertain
Behavior		 Unspecified
Behavior
»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

  • 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

  • Choriocarcinoma (Medical Encyclopedia)
  • Endometrial biopsy (Medical Encyclopedia)
  • Endometrial cancer (Medical Encyclopedia)
  • Uterine Cancer (Centers for Disease Control and Prevention)
  • What to Know about Brachytherapy (A Type of Internal Radiation Therapy) - NIH - Easy-to-Read (National Cancer Institute)
  • What to Know about External Beam Radiation Therapy - NIH - Easy-to-Read (National Cancer Institute)

[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
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.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Present on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

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