ICD-10-CM 2027 diagnosis code

D01Carcinoma in situ of other and unspecified digestive organs

Not billable — use a more specific code

D01 is a header code, so it can't be reported by itself. Choose one of the 8 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 D01

D01 is the ICD-10-CM diagnosis code for carcinoma in situ of other and unspecified digestive organs. It belongs to block D00-D09 (in situ neoplasms) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: D01.0 (colon), D01.1 (junction), D01.2 (rectum), D01.3 (canal), D01.4 (intestine), D01.5 (ducts), D01.7 (organs) and D01.9 (unspecified).

Don't report D01 together with the conditions in its Excludes1 note: melanoma in situ (D03.-).

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 D01

Coding notes

Excludes1Not coded here — never report together with this code

melanoma in situ (D03.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to D01.

Broader instructions also apply from D00-D09 In situ neoplasms and Chapter 2: Neoplasms.

Code history

2016
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2023
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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 D01

Is D01 billable?: No. D01 is a header code. Report one of its more specific subcodes instead.