ICD-10-CM Codes
C00-D49 Neoplasms
C15-C26 Malignant neoplasms of digestive organs
C26- Malignant neoplasm of other and ill-defined digestive organs
2020 ICD-10-CM Diagnosis Code C26

2020 ICD-10-CM Diagnosis Code C26

Malignant neoplasm of other and ill-defined digestive organs

2016

2017

2018

2019

2020

Non-Billable/Non-Specific Code

C26 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2020 edition of ICD-10-CM C26 became effective on October 1, 2019.
This is the American ICD-10-CM version of C26 - other international versions of ICD-10 C26 may differ.

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as C26. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

malignant neoplasm of peritoneum and retroperitoneum (
ICD-10-CM Diagnosis Code C48
- C48 Malignant neoplasm of retroperitoneum and per...
  - C48.0 Malignant neoplasm of retroperitoneum
  - C48.1 Malignant neoplasm of specified parts of peri...
  - C48.2 Malignant neoplasm of peritoneum, unspecified...
  - C48.8 Malignant neoplasm of overlapping sites of re...
C48.-
)

The following code(s) above C26 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 C26:

C00-D49
2020 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
C15-C26
2020 ICD-10-CM Range C15-C26
Malignant neoplasms of digestive organs
Type 1 Excludes
- Kaposi's sarcoma of gastrointestinal sites (C46.4)
Type 2 Excludes
- gastrointestinal stromal tumors (C49.A-)
Malignant neoplasms of digestive organs

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

ICD-10-CM Codes Adjacent To C26

C24.9 Malignant neoplasm of biliary tract, unspecified

C25 Malignant neoplasm of pancreas

C25.0 Malignant neoplasm of head of pancreas

C25.1 Malignant neoplasm of body of pancreas

C25.2 Malignant neoplasm of tail of pancreas

C25.3 Malignant neoplasm of pancreatic duct

C25.4 Malignant neoplasm of endocrine pancreas

C25.7 Malignant neoplasm of other parts of pancreas

C25.8 Malignant neoplasm of overlapping sites of pancreas

C25.9 Malignant neoplasm of pancreas, unspecified

C26 Malignant neoplasm of other and ill-defined digestive organs

C26.0 Malignant neoplasm of intestinal tract, part unspecified

C26.1 Malignant neoplasm of spleen

C26.9 Malignant neoplasm of ill-defined sites within the digestive system

C30 Malignant neoplasm of nasal cavity and middle ear

C30.0 Malignant neoplasm of nasal cavity

C30.1 Malignant neoplasm of middle ear

C31 Malignant neoplasm of accessory sinuses

C31.0 Malignant neoplasm of maxillary sinus

C31.1 Malignant neoplasm of ethmoidal sinus

C31.2 Malignant neoplasm of frontal sinus

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

2020 ICD-10-CM Diagnosis Code C26

Malignant neoplasm of other and ill-defined digestive organs

Neoplasms

Malignant neoplasms of digestive organs