ICD-10-CM Codes
C00-D49
C7A-C7A
C7A-
2023 ICD-10-CM Diagnosis Code C7A.02

2023 ICD-10-CM Diagnosis Code C7A.02

Malignant carcinoid tumors of the appendix, large intestine, and rectum

2016

2017

2018

2019

2020

2021

2022

2023

Non-Billable/Non-Specific Code

C7A.02 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
Short description: Malig carcinoid tumors of the appendix, lg int, and rectum
The 2023 edition of ICD-10-CM C7A.02 became effective on October 1, 2022.
This is the American ICD-10-CM version of C7A.02 - other international versions of ICD-10 C7A.02 may differ.

The following code(s) above C7A.02 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.02:

C00-D49
2023 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

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
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Code annotations containing back-references to C7A.02:

Type 1 Excludes: C19
, C18

ICD-10-CM Diagnosis Code C19
Malignant neoplasm of rectosigmoid junction
Applicable To
- Malignant neoplasm of colon with rectum
- Malignant neoplasm of rectosigmoid (colon)
Type 1 Excludes
- malignant carcinoid tumors of the colon (C7A.02-)
ICD-10-CM Diagnosis Code C18
Malignant neoplasm of colon
Type 1 Excludes
- malignant carcinoid tumors of the colon (C7A.02-)
Type 2 Excludes: C21

ICD-10-CM Diagnosis Code C21
Malignant neoplasm of anus and anal canal
Type 2 Excludes
- malignant carcinoid tumors of the colon (C7A.02-)
- malignant melanoma of anal margin (C43.51)
- malignant melanoma of anal skin (C43.51)
- malignant melanoma of perianal skin (C43.51)
- other and unspecified malignant neoplasm of anal margin (C44.500, C44.510, C44.520, C44.590)
- other and unspecified malignant neoplasm of anal skin (C44.500, C44.510, C44.520, C44.590)
- other and unspecified malignant neoplasm of perianal skin (C44.500, C44.510, C44.520, C44.590)

ICD-10-CM Codes Adjacent To C7A.02

C75.8 Malignant neoplasm with pluriglandular involvement, unspecified

C75.9 Malignant neoplasm of endocrine gland, unspecified

C7A Malignant neuroendocrine tumors

C7A.0 Malignant carcinoid tumors

C7A.00 Malignant carcinoid tumor of unspecified site

C7A.01 Malignant carcinoid tumors of the small intestine

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

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

2023 ICD-10-CM Diagnosis Code C7A.02

Malignant carcinoid tumors of the appendix, large intestine, and rectum

Neoplasms

Malignant neuroendocrine tumors

Malignant neoplasm of rectosigmoid junction

Malignant neoplasm of colon

Malignant neoplasm of anus and anal canal