2023

  1. ICD-10-CM Codes
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  2. C00-D49
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  3. C7A-C7A
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  4. C7A-
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  5. 2023 ICD-10-CM Diagnosis Code C7A.00

2023 ICD-10-CM Diagnosis Code C7A.00

Malignant carcinoid tumor of unspecified site

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • C7A.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM C7A.00 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of C7A.00 - other international versions of ICD-10 C7A.00 may differ.
The following code(s) above C7A.00 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.00:
  • 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

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    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
  • Malignant carcinoid tumor
  • Malignant carcinoid tumor of unknown primary site
  • Malignant neuroendocrine tumor
  • Neuroendocrine tumor, unknown primary site
ICD-10-CM C7A.00 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 826 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures with mcc
  • 827 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures with cc
  • 828 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures without cc/mcc
  • 829 Myeloproliferative disorders or poorly differentiated neoplasms with other procedures with cc/mcc
  • 830 Myeloproliferative disorders or poorly differentiated neoplasms with other procedures without cc/mcc
  • 843 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses with mcc
  • 844 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses with cc
  • 845 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses without cc/mcc

Convert C7A.00 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
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
Code annotations containing back-references to C7A.00:
  • Type 1 Excludes: C80
    ICD-10-CM Diagnosis Code C80

    Malignant neoplasm without specification of site

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • malignant carcinoid tumor of unspecified site (C7A.00)
    • malignant neoplasm of specified multiple sites- code to each site
  • Applicable To: Z85.9
    ICD-10-CM Diagnosis Code Z85.9

    Personal history of malignant neoplasm, unspecified

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
    Applicable To

Diagnosis Index entries containing back-references to C7A.00:

ICD-10-CM Codes Adjacent To C7A.00
C75.0 Malignant neoplasm of parathyroid gland
C75.1 Malignant neoplasm of pituitary gland
C75.2 Malignant neoplasm of craniopharyngeal duct
C75.3 Malignant neoplasm of pineal gland
C75.4 Malignant neoplasm of carotid body
C75.5 Malignant neoplasm of aortic body and other paraganglia
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

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

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