Version 2024

2024 ICD-10-CM Diagnosis Code C7A.8

Other malignant neuroendocrine tumors

ICD-10-CM Code:: C7A.8
ICD-10 Code for:: Other malignant neuroendocrine tumors
Is Billable?: Yes - Valid for Submission
Chronic Condition Indicator: ^[1]: Chronic
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Code Information
Approximate Synonyms
Clinical Classification
Tabular List of Diseases and Injuries
Index to Diseases and Injuries References
Diagnostic Related Groups Mapping
Convert to ICD-9 Code
Patient Education
Other Codes Used Similar Conditions
Code History

Code Classification

Neoplasms
(C00–D49)
- Malignant neuroendocrine tumors
  (C7A)
  - Malignant neuroendocrine tumors
    (C7A)

C7A.8 is a billable diagnosis code used to specify a medical diagnosis of other malignant neuroendocrine tumors. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Approximate Synonyms

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

High-grade neuroendocrine carcinoma of cervix uteri
High-grade neuroendocrine carcinoma of corpus uteri
Low-grade neuroendocrine neoplasm of corpus uteri
Malignant neoplasm of hepatic duct
Malignant neuroendocrine tumor
Malignant perivascular epithelioid cell neoplasm
Malignant poorly differentiated neuroendocrine carcinoma
Malignant poorly differentiated neuroendocrine carcinoma
Malignant tumor of ampulla of Vater
Malignant tumor of body of stomach
Malignant tumor of body of stomach
Malignant tumor of jejunum
Malignant tumor of pyloric antrum
Metastatic pancreatic endocrine carcinoma
Mixed ductal-neuroendocrine carcinoma of pancreas
Mixed neuroendocrine-non neuroendocrine neoplasm of pancreas
Mixed neuroendocrine-non neuroendocrine neoplasm of pancreas
Mixed neuroendocrine-non neuroendocrine neoplasm of pancreas
Neoplasm of cystic duct
Neuroendocrine carcinoma
Neuroendocrine carcinoma of anus
Neuroendocrine carcinoma of appendix
Neuroendocrine carcinoma of pancreas
Neuroendocrine carcinoma of thymus
Neuroendocrine neoplasm of appendix
Neuroendocrine neoplasm of appendix
Neuroendocrine neoplasm of duodenum
Neuroendocrine neoplasm of duodenum
Neuroendocrine neoplasm of duodenum
Neuroendocrine neoplasm of gallbladder
Neuroendocrine neoplasm of lung
Neuroendocrine neoplasm of rectum
Neuroendocrine neoplasm of rectum
Neuroendocrine tumor of anus
Neuroendocrine tumor of anus
Neuroendocrine tumor of anus
Non-functioning neuroendocrine neoplasm of pancreas
Overlapping malignant neoplasm of stomach
Primary hepatic neuroendocrine carcinoma
Primary malignant neoplasm of ampulla of Vater
Primary malignant neoplasm of anal canal
Primary malignant neoplasm of appendix
Primary malignant neoplasm of body of stomach
Primary malignant neoplasm of body of stomach
Primary malignant neoplasm of cardia of stomach
Primary malignant neoplasm of cardia of stomach
Primary malignant neoplasm of common bile duct
Primary malignant neoplasm of common bile duct
Primary malignant neoplasm of cystic duct
Primary malignant neoplasm of duodenum
Primary malignant neoplasm of duodenum
Primary malignant neoplasm of duodenum
Primary malignant neoplasm of gallbladder
Primary malignant neoplasm of ileum
Primary malignant neoplasm of jejunum
Primary malignant neoplasm of pancreatic duct
Primary malignant neoplasm of prostate
Primary malignant neoplasm of pyloric antrum
Primary malignant neoplasm of rectum
Primary malignant neoplasm of rectum
Primary malignant neoplasm of thymus
Primary malignant neuroendocrine neoplasm of ampulla of Vater
Primary malignant neuroendocrine neoplasm of anal canal
Primary malignant neuroendocrine neoplasm of anus
Primary malignant neuroendocrine neoplasm of appendix
Primary malignant neuroendocrine neoplasm of ascending colon
Primary malignant neuroendocrine neoplasm of biliary tract
Primary malignant neuroendocrine neoplasm of body of stomach
Primary malignant neuroendocrine neoplasm of bronchus
Primary malignant neuroendocrine neoplasm of cardia of stomach
Primary malignant neuroendocrine neoplasm of cecum
Primary malignant neuroendocrine neoplasm of colon
Primary malignant neuroendocrine neoplasm of cystic duct
Primary malignant neuroendocrine neoplasm of distal bile duct
Primary malignant neuroendocrine neoplasm of duodenum
Primary malignant neuroendocrine neoplasm of esophagus
Primary malignant neuroendocrine neoplasm of ileum
Primary malignant neuroendocrine neoplasm of jejunum
Primary malignant neuroendocrine neoplasm of large intestine
Primary malignant neuroendocrine neoplasm of lung
Primary malignant neuroendocrine neoplasm of pancreas
Primary malignant neuroendocrine neoplasm of perihilar bile duct
Primary malignant neuroendocrine neoplasm of pyloric antrum of stomach
Primary malignant neuroendocrine neoplasm of rectum
Primary malignant neuroendocrine neoplasm of small intestine
Primary malignant neuroendocrine neoplasm of stomach
Primary malignant neuroendocrine neoplasm of stomach
Primary malignant neuroendocrine neoplasm of stomach
Primary malignant neuroendocrine neoplasm of stomach
Primary malignant neuroendocrine neoplasm of stomach
Primary malignant neuroendocrine neoplasm of stomach
Primary malignant neuroendocrine neoplasm of stomach
Primary malignant neuroendocrine neoplasm of stomach
Primary malignant neuroendocrine neoplasm of thymus gland
Primary malignant perivascular epithelioid cell neoplasm
Primary mixed acinar endocrine-ductal carcinoma of pancreas
Primary neuroendocrine carcinoma of body of stomach
Primary neuroendocrine carcinoma of cardia of stomach
Primary neuroendocrine carcinoma of cervix uteri
Primary neuroendocrine carcinoma of colon
Primary neuroendocrine carcinoma of duodenum
Primary neuroendocrine carcinoma of esophagus
Primary neuroendocrine carcinoma of gallbladder
Primary neuroendocrine carcinoma of overlapping sites of stomach
Primary neuroendocrine carcinoma of pyloric antrum of stomach
Primary neuroendocrine carcinoma of rectum
Primary neuroendocrine carcinoma of small intestine
Primary neuroendocrine carcinoma of stomach
Primary small cell carcinoma of prostate
Primary small cell neuroendocrine carcinoma of prostate
Serotonin level above reference range
Serotonin-producing neuroendocrine neoplasm of pancreas
Small cell carcinoma of prostate
Small cell carcinoma of prostate
Small cell neuroendocrine carcinoma of bladder
Small cell neuroendocrine carcinoma of prostate
Well-differentiated neuroendocrine carcinoma of thymus

Clinical Classification

Clinical Category is Malignant neuroendocrine tumors
CCSR Category Code: NEO066
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.

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).

- Tumor - See Also: Neoplasm, unspecified behavior, by site;
- - neuroendocrine - D3A.8
  - - specified NEC - C7A.8

C7A.8 is grouped with Diagnostic Related Groups - MS-DRG Mapping

Diagnostic Related Groups (DRGs) are a classification system used to group together diagnosis codes for the purpose of reimbursement and healthcare management. DRGs are used to standardize the way hospitals and other providers are paid for inpatient services. In this system patients are grouped together based on their principal diagnosis in areas referred to as Major Diagnostic Categories (MDC). Once a patient is assigned a particular diagnostic category, providers receive a predetermined payment rate for the services rendered. This reimbursement rate is often fixed and is meant to cover the cost of care for that patient. Reimbursement is also affected by the relative weight of a diagnostic related group based on the severity of a patient's illness and the associated cost of care during hospitalization.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V41.0 applicable from 10/01/2023 through 09/30/2024.

MS-DRG	MS-DRG Title	MCD	Relative Weight
826	MYELOPROLIFERATIVE DISORDERS OR POORLY DIFFERENTIATED NEOPLASMS WITH MAJOR O.R. PROCEDURES WITH MCC	17	4.3888
827	MYELOPROLIFERATIVE DISORDERS OR POORLY DIFFERENTIATED NEOPLASMS WITH MAJOR O.R. PROCEDURES WITH CC	17	2.3172
828	MYELOPROLIFERATIVE DISORDERS OR POORLY DIFFERENTIATED NEOPLASMS WITH MAJOR O.R. PROCEDURES WITHOUT CC/MCC	17	1.6404

The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Convert C7A.8 to ICD-9-CM

ICD-9-CM Code: 209.30 - Malig neuroendo ca NOS
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

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]

Endocrine Diseases

Your endocrine system includes eight major glands throughout your body. These glands make hormones. Hormones are chemical messengers. They travel through your bloodstream to tissues or organs. Hormones work slowly and affect body processes from head to toe. These include:

Growth and development
Metabolism - digestion, elimination, breathing, blood circulation and maintaining body temperature
Sexual function
Reproduction
Mood

If your hormone levels are too high or too low, you may have a hormone disorder. Hormone diseases also occur if your body does not respond to hormones the way it is supposed to. Stress, infection and changes in your blood's fluid and electrolyte balance can also influence hormone levels.

In the United States, the most common endocrine disease is diabetes. There are many others. They are usually treated by controlling how much hormone your body makes. Hormone supplements can help if the problem is too little of a hormone.