2026 ICD-10-CM Diagnosis Code C7A.098Malignant carcinoid tumors of other sites

ICD-10-CM Codes›C00–D49›C7A›C7A

ICD-10-CM C7A.098
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C7A.098 is a billable ICD-10-CM diagnosis code for malignant carcinoid tumors of other sites. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 826 through 830, 843 through 845. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Malignant neuroendocrine tumors.

Code Identity

ICD-10-CM Code
C7A.098
Billable Status
Yes — Valid for Submission
Code Describes
Malignant carcinoid tumors of other sites
Short Description
Malignant carcinoid tumors of other sites
Same as the full description in the CMS dataset.
Parent Code
C7A.09
Malignant carcinoid tumors of other sites

Code Classification

ChapterC00–D49Neoplasms
SectionC7AMalignant neuroendocrine tumors
CategoryC7AMalignant neuroendocrine tumors
This CodeC7A.098Malignant carcinoid tumors of other sites

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Carcinoma of nasal cavity
  • Carcinoma of peritoneum
  • Malignant carcinoid tumor of pancreas
  • Malignant neoplasm of ampulla of Vater
  • Malignant neoplasm of hepatic duct
  • Malignant neuroendocrine neoplasm of nasal cavity
  • Metastatic well-differentiated neuroendocrine neoplasm to peritoneum
  • Metastatic well-differentiated neuroendocrine tumor
  • Neoplasm of cystic duct
  • Neuroendocrine neoplasm of duodenum
  • Neuroendocrine neoplasm of gallbladder
  • Neuroendocrine neoplasm of liver
  • Primary malignant neoplasm of ampulla of Vater
  • Primary malignant neoplasm of anal canal
  • Primary malignant neoplasm of common bile duct
  • Primary malignant neoplasm of cystic duct
  • Primary malignant neoplasm of duodenum
  • Primary malignant neoplasm of pancreatic duct
  • 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 biliary tract
  • 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 pancreas
  • Primary well-differentiated neuroendocrine tumor of ampulla of Vater
  • Primary well-differentiated neuroendocrine tumor of anal canal
  • Primary well-differentiated neuroendocrine tumor of anus
  • Primary well-differentiated neuroendocrine tumor of biliary tract
  • Primary well-differentiated neuroendocrine tumor of cystic duct
  • Primary well-differentiated neuroendocrine tumor of distal bile duct
  • Primary well-differentiated neuroendocrine tumor of duodenum
  • Primary well-differentiated neuroendocrine tumor of esophagus
  • Primary well-differentiated neuroendocrine tumor of pancreas
  • Primary well-differentiated neuroendocrine tumor of perihilar bile duct
  • Primary well-differentiated neuroendocrine tumor of small intestine
  • Well-differentiated neuroendocrine tumor of ampulla of Vater
  • Well-differentiated neuroendocrine tumor of anus
  • Well-differentiated neuroendocrine tumor of corpus uteri
  • Well-differentiated neuroendocrine tumor of duodenum
  • Well-differentiated neuroendocrine tumor of gallbladder
  • Well-differentiated neuroendocrine tumor of liver
  • Well-differentiated neuroendocrine tumor of nasal cavity

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Tumor
      • carcinoid
        • malignant
          • specified NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NEO066
Malignant neuroendocrine tumors
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Carcinoid Tumors

Carcinoid tumors are rare, slow-growing cancers. They usually start in the lining of the digestive tract or in the lungs. They grow slowly and don't produce symptoms in the early stages. As a result, the average age of people diagnosed with digestive or lung carcinoids is about 60.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert C7A.098 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
209.29 Malig carcinoid oth site
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C7A.098Overview

Is C7A.098 (Malignant carcinoid tumors of other sites) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report malignant carcinoid tumors of other sites on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does C7A.098 group to?

When malignant carcinoid tumors of other sites is the principal diagnosis on an inpatient stay, it groups to MS-DRG 826, 827, 828, 829, 830, 843, 844, 845, with relative weights from 0.8516 to 4.6778 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of C7A.098?

Under the General Equivalence Mappings, malignant carcinoid tumors of other sites converts to ICD-9-CM 209.29 (malig carcinoid oth site). The mapping is a direct match.

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.