ICD-10-CM 2027 diagnosis code

D12Benign neoplasm of colon, rectum, anus and anal canal

Not billable — use a more specific code

D12 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About D12

D12 is the ICD-10-CM diagnosis code for benign neoplasm of colon, rectum, anus and anal canal. It belongs to block D10-D36 (benign neoplasms, except benign neuroendocrine tumors) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: D12.0 (cecum), D12.1 (appendix), D12.2 (colon), D12.3 (colon), D12.4 (colon), D12.5 (colon), D12.6 (unspecified), D12.7 (junction) and 2 more.

The conditions in its Excludes2 note aren't part of D12, but may be coded alongside it if the patient has both: benign carcinoid tumors of the large intestine and rectum (D3A.02-) and polyp of colon NOS (K63.5).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under D12

Coding notes

Excludes2Not included here — may be reported together if both conditions exist

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

Notes that apply from higher levels

Instructions written at a parent level also apply to D12.

Broader instructions also apply from Chapter 2: Neoplasms.

Codes whose notes reference D12

K63.5Excludes2

Code history

2016
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2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about D12

Is D12 billable?: No. D12 is a header code. Report one of its more specific subcodes instead.