Gastrointestinal system NOS, metastatic malignancy to it (also code primary site)

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ICD10 Diagnosis
Dx: Gastrointestinal system NOS, metastatic malignancy to it (also code primary site)
ICD10 code: C78.8
Pre-ICD10 counterpart: none assigned
Charlson/ALERT Scale: Metastatic solid tumor
APACHE Como Component: none
APACHE Acute Component: 2019-0: GI surgery for neoplasm
Start Date:
Stop Date:
External ICD10 Documentation

This diagnosis is a part of ICD10 collection.

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    • 2019-01-01
    • 2999-12-31
    • C78.8
  • Cargo


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Additional Info

Includes metastases to the pancreas / pancreatic metastases. Metastasis to the pancreas / pancreatic metastasis.

Alternate ICD10s to consider coding instead or in addition

Gastrointestinal neoplasm codes:
Metastasis codes:

Candidate Combined ICD10 codes

Malignancy with Metastasis

Metastasis and their primary tumor should be coded in combination because the codes for mets don't specify the primary site, only the site of the mets.

Codes for the mets can be found at:

Metastasis codes:
  • If the site of the mets isn't in the list, use Site NOS, metastatic malignancy to it (also code primary site)
  • If there are mets to multiple sites, then combine all together the primary malignancy code to the codes for the different sites of the mets.
  • If the mets are in the other of a paired organ (e.g. the other kidney), then code both the primary and the metastatic codes, and link them together

Codes for the primary tumors can be found at:

Neoplastic codes:
... further results

Related CCI Codes

Data Integrity Checks (automatic list)

none found

Related Articles

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