D37.3 Neoplasm of uncertain behavior of appendix

Billable ICD-10-CM code, FY2026.

Applies from D37 Neoplasm of uncertain behavior of oral cavity and digestive organs

Excludes1 (never code together)

• stromal tumors of uncertain behavior of digestive system (D48.1-)

MS-DRG index

Defines the logic of DRG(s) 374-376 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 235.2 Neoplasm of uncertain behavior of stomach, intestines, and rectum (approximate)

Code annotations containing back-references to D37.3

Back-references to D37

• Type 1 Excludes: D49 Neoplasms of unspecified behavior ("neoplasms of uncertain behavior (D37-D44, D48)")

Nearby codes

• D37.04 Neoplasm of uncertain behavior of the minor salivary glands
• D37.05 Neoplasm of uncertain behavior of pharynx
• D37.09 Neoplasm of uncertain behavior of other specified sites of the oral cavity
• D37.1 Neoplasm of uncertain behavior of stomach
• D37.2 Neoplasm of uncertain behavior of small intestine
• D37.3 Neoplasm of uncertain behavior of appendix (this code)
• D37.4 Neoplasm of uncertain behavior of colon
• D37.5 Neoplasm of uncertain behavior of rectum
• D37.6 Neoplasm of uncertain behavior of liver, gallbladder and bile ducts
• D37.8 Neoplasm of uncertain behavior of other specified digestive organs
• D37.9 Neoplasm of uncertain behavior of digestive organ, unspecified