ICD-10-CM Codes
C00-D49 Neoplasms
C7A-C7A Malignant neuroendocrine tumors
C7A- Malignant neuroendocrine tumors
2021 ICD-10-CM Diagnosis Code C7A.025

2021 ICD-10-CM Diagnosis Code C7A.025

Malignant carcinoid tumor of the sigmoid colon

2016

2017

2018

2019

2020

2021

Billable/Specific Code

C7A.025 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2021 edition of ICD-10-CM C7A.025 became effective on October 1, 2020.
This is the American ICD-10-CM version of C7A.025 - other international versions of ICD-10 C7A.025 may differ.

The following code(s) above C7A.025 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to C7A.025:

C00-D49
2021 ICD-10-CM Range C00-D49
Neoplasms
Note
- Functional activity
- All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
- Morphology [Histology]
- Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
- Primary malignant neoplasms overlapping site boundaries
- A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
Neoplasms
C7A
ICD-10-CM Diagnosis Code C7A
Malignant neuroendocrine tumors
Code Also
- any associated multiple endocrine neoplasia [MEN] syndromes (E31.2-)
Type 2 Excludes
- malignant pancreatic islet cell tumors (C25.4)
- Merkel cell carcinoma (C4A.-)
Use Additional
- code to identify any associated endocrine syndrome, such as:
- carcinoid syndrome (E34.0)
Malignant neuroendocrine tumors

Approximate Synonyms

Carcinoma neuroendocrine, sigmoid colon
Malignant carcinoid tumor of sigmoid colon
Primary malignant neuroendocrine tumor of sigmoid colon

ICD-10-CM C7A.025 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):

374 Digestive malignancy with mcc
375 Digestive malignancy with cc
376 Digestive malignancy without cc/mcc

Convert C7A.025 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change

Code annotations containing back-references to C7A.025:

Applicable To: Z85.030

ICD-10-CM Diagnosis Code Z85.030
Personal history of malignant carcinoid tumor of large intestine
Applicable To
- Conditions classifiable to C7A.022-C7A.025, C7A.029

Diagnosis Index entries containing back-references to C7A.025:

Tumor - see also Neoplasm, unspecified behavior, by site
- carcinoid D3A.00
  ICD-10-CM Diagnosis Code D3A.00
  Benign carcinoid tumor of unspecified site
  2016 2017 2018 2019 2020 2021 Billable/Specific Code
  Applicable To
  Carcinoid tumor NOS
  - malignant C7A.00
    ICD-10-CM Diagnosis Code C7A.00
    Malignant carcinoid tumor of unspecified site
    2016 2017 2018 2019 2020 2021 Billable/Specific Code
    - sigmoid colon C7A.025

ICD-10-CM Codes Adjacent To C7A.025

C7A.010 Malignant carcinoid tumor of the duodenum

C7A.011 Malignant carcinoid tumor of the jejunum

C7A.012 Malignant carcinoid tumor of the ileum

C7A.019 Malignant carcinoid tumor of the small intestine, unspecified portion

C7A.02 Malignant carcinoid tumors of the appendix, large intestine, and rectum

C7A.020 Malignant carcinoid tumor of the appendix

C7A.021 Malignant carcinoid tumor of the cecum

C7A.022 Malignant carcinoid tumor of the ascending colon

C7A.023 Malignant carcinoid tumor of the transverse colon

C7A.024 Malignant carcinoid tumor of the descending colon

C7A.025 Malignant carcinoid tumor of the sigmoid colon

C7A.026 Malignant carcinoid tumor of the rectum

C7A.029 Malignant carcinoid tumor of the large intestine, unspecified portion

C7A.09 Malignant carcinoid tumors of other sites

C7A.090 Malignant carcinoid tumor of the bronchus and lung

C7A.091 Malignant carcinoid tumor of the thymus

C7A.092 Malignant carcinoid tumor of the stomach

C7A.093 Malignant carcinoid tumor of the kidney

C7A.094 Malignant carcinoid tumor of the foregut, unspecified

C7A.095 Malignant carcinoid tumor of the midgut, unspecified

C7A.096 Malignant carcinoid tumor of the hindgut, unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2021 ICD-10-CM Diagnosis Code C7A.025

Malignant carcinoid tumor of the sigmoid colon

Neoplasms

Malignant neuroendocrine tumors

Personal history of malignant carcinoid tumor of large intestine

Benign carcinoid tumor of unspecified site

Malignant carcinoid tumor of unspecified site