D12.1 Benign neoplasm of appendix

Billable ICD-10-CM code, FY2026.

Excludes1 (never code together)

• benign carcinoid tumor of the appendix (D3A.020)

Applies from D12 Benign neoplasm of colon, rectum, anus and anal canal

Excludes2 (not included here)

• benign carcinoid tumors of the large intestine and rectum (D3A.02-)
• polyp of colon NOS (K63.5)

MS-DRG index

Defines the logic of DRG(s) 393-395 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 211.3 Benign neoplasm of colon (approximate)

Code annotations containing back-references to D12.1

Back-references to D12

• Type 2 Excludes: K63.5 Polyp of colon ("adenomatous polyp of colon (D12.-)")

Nearby codes

• D12 Benign neoplasm of colon, rectum, anus and anal canal
• D12.0 Benign neoplasm of cecum
• D12.1 Benign neoplasm of appendix (this code)
• D12.2 Benign neoplasm of ascending colon
• D12.3 Benign neoplasm of transverse colon
• D12.4 Benign neoplasm of descending colon
• D12.5 Benign neoplasm of sigmoid colon
• D12.6 Benign neoplasm of colon, unspecified