ICD-10-CM 2027 diagnosis code

D00Carcinoma in situ of oral cavity, esophagus and stomach

Not billable — use a more specific code

D00 is a header code, so it can't be reported by itself. Choose one of the 3 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 D00

D00 is the ICD-10-CM diagnosis code for carcinoma in situ of oral cavity, esophagus and stomach. 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 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: D00.0 (pharynx), D00.1 (esophagus) and D00.2 (stomach).

Don't report D00 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 D00

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 D00.

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

Code history

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2027

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

Common questions about D00

Is D00 billable?: No. D00 is a header code. Report one of its more specific subcodes instead.