2027 ICD-10-CM Diagnosis Code C7AMalignant neuroendocrine tumors
C7A is a non-billable ICD-10-CM category code for malignant neuroendocrine tumors, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C7A.00, C7A.010, C7A.011, and C7A.012.
Code Identity
Code Classification
Specific Coding for Malignant neuroendocrine tumorsOverview
Non-specific codes like C7A require more characters. Use one of these billable codes instead:
C7A.0 for Malignant carcinoid tumors
Use C7A.00 for Malignant carcinoid tumor of unspecified site
C7A.01 for Malignant carcinoid tumors of the small intestine
C7A.02 for Malignant carcinoid tumors of the appendix, large intestine, and rectum
C7A.09 for Malignant carcinoid tumors of other sites
Use C7A.1 for Malignant poorly differentiated neuroendocrine tumors
Use C7A.8 for Other malignant neuroendocrine tumors
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to C7A: its own notes plus those printed at Chapter 2. A note printed at a category, block or chapter applies to every code under it.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify any associated endocrine syndrome, such as:
- carcinoid syndrome (E34.00)
Code Also
A second code may be needed to fully describe the condition; the note gives no sequencing direction.
- any associated multiple endocrine neoplasia [MEN] syndromes (E31.2-)
Notes
General instructions on how these codes are used.
- 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).
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name C7A, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming C7A: they are not reported together with it, unless the two conditions are unrelated.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Tumor See Also: Neoplasm, unspecified behavior, by site;
neuroendocrine C7A
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Code HistoryHistory
Questions About C7AOverview
What is the ICD-10 code for malignant neuroendocrine tumors?
C7A is the ICD-10-CM category for malignant neuroendocrine tumors, but it is a non-billable header: claims need a more specific code from this category, listed on this page.
Is C7A (Malignant neuroendocrine tumors) a billable code?
No. This is a category header that groups the codes for malignant neuroendocrine tumors, and headers cannot be submitted on claims. Claims for malignant neuroendocrine tumors need a more specific code from this category, such as C7A.00, C7A.010, and C7A.011.
Does C7A need an additional code?
When the condition applies, yes. The Use Additional Code note reads: code to identify any associated endocrine syndrome, such as: carcinoid syndrome (E34.00). The additional code is reported after C7A.
