ICD-10 · PDGM grouping
C16 Malignant neoplasm of stomach
All 9 codes in the C16 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
9
Can lead a claim
9
Cannot lead a claim
0
What CMS assigns to C16
All 9 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases. All 9 count toward the Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers comorbidity subgroup. Every code can lead a claim.
- Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers: can award the low comorbidity tier as a secondary diagnosis.
Every code in C16
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| C16.0 | Malignant neoplasm of cardia | Can lead a claim | K | Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers |
| C16.1 | Malignant neoplasm of fundus of stomach | Can lead a claim | K | Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers |
| C16.2 | Malignant neoplasm of body of stomach | Can lead a claim | K | Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers |
| C16.3 | Malignant neoplasm of pyloric antrum | Can lead a claim | K | Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers |
| C16.4 | Malignant neoplasm of pylorus | Can lead a claim | K | Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers |
| C16.5 | Malignant neoplasm of lesser curvature of stomach, unspecifiedCMS: Malignant neoplasm of lesser curvature of stomach, unsp | Can lead a claim | K | Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers |
| C16.6 | Malignant neoplasm of greater curvature of stomach, unspecifiedCMS: Malignant neoplasm of greater curvature of stomach, unsp | Can lead a claim | K | Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers |
| C16.8 | Malignant neoplasm of overlapping sites of stomach | Can lead a claim | K | Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers |
| C16.9 | Malignant neoplasm of stomach, unspecified | Can lead a claim | K | Malignant neoplasm of Digestive Organs, includes Gastrointestinal Cancers |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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