2024 ICD-10-CM Diagnosis Code C78.6
Secondary malignant neoplasm of retroperitoneum and peritoneum
- ICD-10-CM Code:
- C78.6
- ICD-10 Code for:
- Secondary malignant neoplasm of retroperiton and peritoneum
- Is Billable?
- Yes - Valid for Submission
- Chronic Condition Indicator: [1]
- Chronic
- Code Navigator:
C78.6 is a billable diagnosis code used to specify a medical diagnosis of secondary malignant neoplasm of retroperitoneum and peritoneum. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.
The following anatomical sites found in the Table of Neoplasms reference this diagnosis code given the correct histological behavior: Neoplasm, neoplastic cavity peritoneal ; Neoplasm, neoplastic connective tissue NEC retroperitoneum ; Neoplasm, neoplastic cul-de-sac (Douglas') ; Neoplasm, neoplastic Douglas' cul-de-sac or pouch ; Neoplasm, neoplastic mesentery, mesenteric ; Neoplasm, neoplastic mesoappendix ; Neoplasm, neoplastic mesocolon ; etc
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Carcinoma of peritoneum
- Carcinomatosis of peritoneal cavity
- Carcinomatosis of peritoneum
- Invasion of neoplasm to visceral peritoneum
- Malignant neoplasm of mesentery
- Malignant neoplasm of mesentery
- Malignant neoplasm of mesocolon
- Malignant neoplasm of omentum
- Malignant neoplasm of perinephric tissue
- Malignant neoplasm of retrocecal tissue
- Malignant neoplasm of the pouch of Douglas
- Malignant tumor of peritoneum and retroperitoneum
- Metastatic malignant neoplasm to omentum
- Metastatic malignant neoplasm to parietal peritoneum
- Metastatic malignant neoplasm to pelvic peritoneum
- Metastatic malignant neoplasm to periadrenal tissue
- Metastatic malignant neoplasm to perirenal tissue
- Metastatic malignant neoplasm to peritoneum
- Metastatic malignant neoplasm to rectouterine pouch
- Metastatic malignant neoplasm to retrocecal tissue
- Metastatic malignant neoplasm to retroperitoneum
- Metastatic malignant neoplasm to retroperitoneum and peritoneum
- Metastatic malignant neoplasm to the mesentery
- Metastatic malignant neoplasm to the mesocolon
- Metastatic sarcoma to retroperitoneum
- Neoplasm of omentum
- Neoplasm of periadrenal tissue
- Neoplasm of perirenal tissue
- Neoplasm of rectouterine pouch
- Neoplasm of retrocecal tissue
- Neoplasm of the mesocolon
- Pseudomyxoma peritonei
- Renal tumor finding
- Renal tumor invasion into perinephric tissue macroscopically
- Tumor invades retroperitoneal structure
- Tumor of peritoneum and retroperitoneum
Clinical Classification
Clinical Category is Secondary malignancies
- CCSR Category Code: NEO070
- Inpatient Default CCSR: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.
- Outpatient Default CCSR: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.
Clinical Information
Mesocolon
the fold of peritoneum by which the colon is attached to the posterior abdominal wall.Omentum
a double-layered fold of peritoneum that attaches the stomach to other organs in the abdominal cavity.Pseudomyxoma Peritonei
a peritoneal adenocarcinoma characterized by build-up of mucus in the peritoneal cavity. mucus secreting cells may attach to the peritoneal lining and continue to secrete mucus. the majority of cases represent tumor spread from a primary low-grade mucinous neoplasm of the appendix (nci thesaurus).
Index to Diseases and Injuries References
The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).
- - Carcinomatosis - C80.0
- - peritonei - C78.6
- - Pseudomyxoma peritonei - C78.6
Convert C78.6 to ICD-9-CM
- ICD-9-CM Code: 197.6 - Sec mal neo peritoneum
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 »cavity »peritoneal | C48.2 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »connective tissue NEC »retroperitoneum | C48.0 | C78.6 | D20.0 | D48.3 | D49.0 | |
| »Neoplasm, neoplastic »cul-de-sac (Douglas') | C48.1 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »Douglas' cul-de-sac or pouch | C48.1 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »mesentery, mesenteric | C48.1 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »mesoappendix | C48.1 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »mesocolon | C48.1 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »omentum | C48.1 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »paranephric | C48.0 | C78.6 | D20.0 | D48.3 | D49.0 | |
| »Neoplasm, neoplastic »periadrenal (tissue) | C48.0 | C78.6 | D20.0 | D48.3 | D49.0 | |
| »Neoplasm, neoplastic »perinephric | C48.0 | C78.6 | D20.0 | D48.3 | D49.0 | |
| »Neoplasm, neoplastic »peripancreatic | C48.0 | C78.6 | D20.0 | D48.3 | D49.0 | |
| »Neoplasm, neoplastic »perirenal (tissue) | C48.0 | C78.6 | D20.0 | D48.3 | D49.0 | |
| »Neoplasm, neoplastic »peritoneum, peritoneal (cavity) | C48.2 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »peritoneum, peritoneal (cavity) »parietal | C48.1 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »peritoneum, peritoneal (cavity) »pelvic | C48.1 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »peritoneum, peritoneal (cavity) »specified part NEC | C48.1 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »rectouterine pouch | C48.1 | C78.6 | D20.1 | D48.4 | D49.0 | |
| »Neoplasm, neoplastic »retrocecal | C48.0 | C78.6 | D20.0 | D48.3 | D49.0 | |
| »Neoplasm, neoplastic »retroperitoneal (space) (tissue) | C48.0 | C78.6 | D20.0 | D48.3 | D49.0 | |
| »Neoplasm, neoplastic »retroperitoneum | C48.0 | C78.6 | D20.0 | D48.3 | D49.0 |
Patient Education
Cancer
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, immunotherapy or other types of biologic therapy, or stem cell transplantation.
NIH: National Cancer Institute
[Learn More in MedlinePlus]
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.
[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.