2024 ICD-10-CM Diagnosis Code C16.4

Malignant neoplasm of pylorus

• C16.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2024 edition of ICD-10-CM C16.4 became effective on October 1, 2023.
• This is the American ICD-10-CM version of C16.4 – other international versions of ICD-10 C16.4 may differ.

Applicable To

• Malignant neoplasm of prepylorus
• Malignant neoplasm of pyloric canal

The following code(s) above C16.4 contain annotation back-references

 that may be applicable to C16.4:

• C00-D49  Neoplasms
• C15-C26  Malignant neoplasms of digestive organs
• C16  Malignant neoplasm of stomach

Approximate Synonyms

• Adenocarcinoma, pylorus
• Cancer of the stomach, pylorus
• Primary adenocarcinoma of pylorus
• Primary malignant neoplasm of pylorus

ICD-10-CM C16.4 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

• 374 Digestive malignancy with mcc
• 375 Digestive malignancy with cc
• 376 Digestive malignancy without cc/mcc

Convert C16.4 to ICD-9-CMCode 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
• 2024 (effective 10/1/2023): No change

Code annotations containing back-references to C16.4:

• Applicable To: C16.5, C16.6