ICD-10 Diagnosis Code C78.6

Secondary malignant neoplasm of retroperiton and peritoneum

Diagnosis Code C78.6

ICD-10: C78.6
Short Description: Secondary malignant neoplasm of retroperiton and peritoneum
Long Description: Secondary malignant neoplasm of retroperitoneum and peritoneum
This is the 2017 version of the ICD-10-CM diagnosis code C78.6

Valid for Submission
The code C78.6 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Neoplasms (C00–D48)
    • Malignant neoplasms of ill-defined, other secondary and unspecified sites (C76-C80)
      • Secondary malignant neoplasm of resp and digestive organs (C78)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code C78.6 is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
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.
  • 197.6 - Sec mal neo peritoneum

  • Carcinomatosis of peritoneal cavity
  • Malignant neoplasm of mesentery
  • Malignant neoplasm of omentum
  • Malignant neoplasm of perinephric tissue
  • Malignant tumor of peritoneum and retroperitoneum
  • Metastasis to peritoneum of unknown primary
  • Metastasis to retroperitoneum of unknown primary
  • Neoplasm of omentum
  • Neoplasm of parietal peritoneum
  • Neoplasm of periadrenal tissue
  • Neoplasm of rectouterine pouch
  • Neoplasm of retrocecal tissue
  • Neoplasm of the mesocolon
  • Pseudomyxoma peritonei
  • Secondary malignant neoplasm of adrenal gland
  • Secondary malignant neoplasm of omentum
  • Secondary malignant neoplasm of parietal peritoneum
  • Secondary malignant neoplasm of pelvic peritoneum
  • Secondary malignant neoplasm of periadrenal tissue
  • Secondary malignant neoplasm of perirenal tissue
  • Secondary malignant neoplasm of peritoneum
  • Secondary malignant neoplasm of rectouterine pouch
  • Secondary malignant neoplasm of retrocecal tissue
  • Secondary malignant neoplasm of retroperitoneum
  • Secondary malignant neoplasm of retroperitoneum and peritoneum
  • Secondary malignant neoplasm of the mesentery
  • Secondary malignant neoplasm of the mesocolon
  • Tumor of peritoneum and retroperitoneum

Information for Patients


Also called: Carcinoma, Malignancy, Neoplasms, Tumor

Cancer begins in your cells, which are the building blocks of your body. Normally, your body forms new cells as you need them, replacing old cells that die. Sometimes this process goes wrong. New cells grow even when you don't need them, and old cells don't die when they should. These extra cells can form a mass called a tumor. Tumors can be benign or malignant. Benign tumors aren't cancer while malignant ones are. Cells from malignant tumors can invade nearby tissues. They can also break away and spread to other parts of the body.

Cancer is not just one disease but many diseases. There are more than 100 different types of cancer. Most cancers are named for where they start. For example, lung cancer starts in the lung, and breast cancer starts in the breast. The spread of cancer from one part of the body to another is called metastasis. Symptoms and treatment depend on the cancer type and how advanced it is. Most treatment plans may include surgery, radiation and/or chemotherapy. Some may involve hormone therapy, biologic therapy, or stem cell transplantation.

NIH: National Cancer Institute

  • Cancer
  • Cancer and lymph nodes
  • Cancer prevention: take charge of your lifestyle
  • Cancer treatment -- early menopause
  • Cancer treatment: preventing infection
  • Cancer treatments
  • Hyperthermia for treating cancer
  • Laser therapy for cancer
  • Photodynamic therapy for cancer
  • Targeted therapies for cancer

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Peritoneal Disorders

Your peritoneum is the tissue that lines your abdominal wall and covers most of the organs in your abdomen. A liquid, peritoneal fluid, lubricates the surface of this tissue.

Disorders of the peritoneum are not common. They include

  • Peritonitis - an inflammation of the peritoneum
  • Cancer
  • Complications from peritoneal dialysis

Your doctor may use imaging tests or lab tests to analyze the peritoneal fluid to diagnose the problem. Treatment of peritoneal disorders depends on the cause.

  • Peritonitis
  • Peritonitis - secondary
  • Peritonitis - spontaneous
  • Retroperitoneal inflammation

[Read More]
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