2027 ICD-10-CM Diagnosis Code D00Carcinoma in situ of oral cavity, esophagus and stomach

ICD-10-CM Codes›C00–D49›D00-D09›D00

ICD-10-CM D00
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

D00 is a non-billable ICD-10-CM category code for carcinoma in situ of oral cavity, esophagus and stomach, so it cannot be submitted on claims. Use a more specific code from this category instead, such as D00.00, D00.01, D00.02, and D00.03.

Code Identity

ICD-10-CM Code
D00
Billable Status
No — Non-Billable Category
Code Describes
Carcinoma in situ of oral cavity, esophagus and stomach
Short Description
Carcinoma in situ of oral cavity, esophagus and stomach
Same as the full description in the CMS dataset.
Chapter
D00-D09
In situ neoplasms

Code Classification

ChapterC00–D49Neoplasms
SectionD00-D09In situ neoplasms
CategoryD00Carcinoma in situ of oral cavity, esophagus and stomach
This CodeD00Carcinoma in situ of oral cavity, esophagus and stomach

Specific Coding for Carcinoma in situ of oral cavity, esophagus and stomachOverview

Non-specific codes like D00 require more characters. Use one of these billable codes instead:

  • D00.0 for Carcinoma in situ of lip, oral cavity and pharynx

  • Use D00.00 for Carcinoma in situ of oral cavity, unspecified site

  • Use D00.01 for Carcinoma in situ of labial mucosa and vermilion border

  • Use D00.02 for Carcinoma in situ of buccal mucosa

  • Use D00.03 for Carcinoma in situ of gingiva and edentulous alveolar ridge

  • Use D00.04 for Carcinoma in situ of soft palate

  • Use D00.05 for Carcinoma in situ of hard palate

  • Use D00.06 for Carcinoma in situ of floor of mouth

  • Use D00.07 for Carcinoma in situ of tongue

  • Use D00.08 for Carcinoma in situ of pharynx

  • Use D00.1 for Carcinoma in situ of esophagus

  • Use D00.2 for Carcinoma in situ of stomach

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to D00: its own notes plus those printed at block D00-D09 and Chapter 2. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block D00-D09 In situ neoplasms applies to 106 codes
  • Bowen's disease
  • erythroplasia
  • grade III intraepithelial neoplasia
  • Queyrat's erythroplasia

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

Notes

General instructions on how these codes are used.

From Chapter 2 (C00-D49) Neoplasms applies to 1,730 codes
  • Functional activity
  • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Morphology [Histology]
  • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Primary malignant neoplasms overlapping site boundaries
  • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Malignant neoplasm of ectopic tissue
  • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name D00, its category, or a range that includes it.

Applicable To 1

These notes mention D00.

  • Z86.003 Personal history of in-situ neoplasm of oral cavity, esophagus and stomach
    Conditions classifiable to D00

Patient EducationClinical

Esophageal Cancer

The esophagus is a hollow tube that carries food and liquids from your throat to your stomach. Early esophageal cancer usually does not cause symptoms. Later, you may have symptoms such as:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About D00Overview

What is the ICD-10 code for carcinoma in situ of oral cavity, esophagus and stomach?

D00 is the ICD-10-CM category for carcinoma in situ of oral cavity, esophagus and stomach, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is D00 (Carcinoma in situ of oral cavity, esophagus and stomach) a billable code?

No. This is a category header that groups the codes for carcinoma in situ of oral cavity, esophagus and stomach, and headers cannot be submitted on claims. Claims for carcinoma in situ of oral cavity, esophagus and stomach need a more specific code from this category, such as D00.00, D00.01, and D00.02.

Can D00 be reported with a code from D03?

Not as a rule. The Excludes1 note on D00 lists "melanoma in situ (D03.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).