ICD-10-CM Diagnosis Code D00.2 - Carcinoma in situ of stomach (original) (raw)

ICD List 2025-2026 Edition

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6. 2026 ICD-10-CM Code D00.2

Carcinoma in situ of stomach

ICD-10-CM Code:

D00.2

ICD-10 Code for:

Carcinoma in situ of stomach

Is Billable?

Yes - Valid for Submission

Chronic Condition Indicator: [1]

Chronic

Code Navigator:

D00.2 is a billable diagnosis code used to specify a medical diagnosis of carcinoma in situ of stomach. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2025 through September 30, 2026.

The following anatomical sites found in the Table of Neoplasms reference this diagnosis code given the correct histological behavior: Neoplasm, neoplastic antrum (Highmore) (maxillary) pyloric ; Neoplasm, neoplastic cardia (gastric) ; Neoplasm, neoplastic cardiac orifice (stomach) ; Neoplasm, neoplastic cardio-esophageal junction ; Neoplasm, neoplastic cardio-esophagus ; Neoplasm, neoplastic corpus gastric ; Neoplasm, neoplastic esophagogastric junction ; etc

1. Code Information
2. Approximate Synonyms
3. Clinical Classification
4. Clinical Information
5. Tabular List of Diseases and Injuries
6. Diagnostic Related Groups Mapping
7. Convert to ICD-9 Code
8. Table of Neoplasms
9. Patient Education
10. Other Codes Used Similar Conditions
11. Code History

• Neoplasms
  C00–D49
  • In situ neoplasms
    D00-D09
    * Carcinoma in situ of oral cavity, esophagus and stomach
    D00

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

• Carcinoma in situ of body of stomach
• Carcinoma in situ of cardia of stomach
• Carcinoma in situ of fundus of stomach
• Carcinoma in situ of greater curvature of stomach
• Carcinoma in situ of lesser curve of stomach
• Carcinoma in situ of pyloric antrum
• Carcinoma in situ of pylorus
• Carcinoma in situ of stomach

Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.

They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.

CCSR Code: NEO013

Inpatient Default: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.

Outpatient Default: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

• Esophagogastric Junction

the area covering the terminal portion of esophagus and the beginning of stomach at the cardiac orifice.

• Pyloric Stenosis

narrowing of the pyloric canal with varied etiology. a common form is due to muscle hypertrophy (pyloric stenosis, hypertrophic) seen in infants.

• Pylorus

the region of the stomach at the junction with the duodenum. it is marked by the thickening of circular muscle layers forming the pyloric sphincter to control the opening and closure of the lumen.

• Bariatric Surgery

surgical procedures aimed at affecting metabolism and producing major weight reduction in patients with morbid obesity.

• Diverticulosis, Stomach

a pathological condition characterized by the presence of a number of gastric diverticula in the stomach.

• Diverticulum, Stomach

saccular, outward protrusion of all or a portion of the wall of the stomach.

• Gastric Absorption

uptake of substances via the stomach.

• Gastric Antral Vascular Ectasia

a distinct vascular lesion in the pyloric antrum that is characterized by tortuous dilated blood vessels (ectasia) radiating outward from the pylorus. the vessel pattern resembles the stripes on the surface of a watermelon. this lesion causes both acute and chronic gastrointestinal hemorrhage.

• Gastric Dilatation

abnormal distention of the stomach due to accumulation of gastric contents that may reach 10 to 15 liters. gastric dilatation may be the result of gastric outlet obstruction; ileus; gastroparesis; or denervation.

• Gastric Fistula

abnormal passage communicating with the stomach.

• Gastric Stump

that portion of the stomach remaining after gastric surgery, usually gastrectomy or gastroenterostomy for cancer of the stomach or peptic ulcer. it is a common site of cancer referred to as stump cancer or carcinoma of the gastric stump.

• Gastrointestinal Contents

the contents included in all or any segment of the gastrointestinal tract.

• Receptor-Like Protein Tyrosine Phosphatases, Class 3

a subclass of receptor-like protein tryosine phosphatases that contain a single cytosolic protein tyrosine phosphate domain and multiple extracellular fibronectin iii-like domains.

• Stomach

an organ of digestion situated in the left upper quadrant of the abdomen between the termination of the esophagus and the beginning of the duodenum.

• Stomach Diseases

pathological processes involving the stomach.

• Stomach Neoplasms

tumors or cancer of the stomach.

• Stomach Rupture

bursting of the stomach.

• Stomach Ulcer

ulceration of the gastric mucosa due to contact with gastric juice. it is often associated with helicobacter pylori infection or consumption of nonsteroidal anti-inflammatory drugs (nsaids).

• Stomach Volvulus

twisting of the stomach that may result in gastric ischemia and gastric outlet obstruction. it is often associated with diaphragmatic hernia.

• Stomach, Avian

a component of the digestive system of birds which consists of the gizzard and proventriculus.

• Stomach, Ruminant

a component of the digestive system of ruminants which consists of the abomasum; omasum; reticulum; and rumen.

Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

ICD-9-CM: 230.2

This is a direct match with no additional mapping qualifiers. The absence of a flag generally means the mapping is considered exact or precise. In other words, the ICD-10 code maps cleanly to the ICD-9 code without qualification, approximation, or needing multiple codes.

This code is referenced in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Filter table of neoplasms:

Stomach Cancer

The stomach is an organ between the esophagus and the small intestine. It mixes food with stomach acid and helps digest protein. Stomach cancer mostly affects older people - two-thirds of people who have it are over age 65. Your risk of getting it is also higher if you:

• Have had a Helicobacter pylori infection
• Have had stomach inflammation
• Are a man
• Eat lots of salted, smoked, or pickled foods
• Smoke cigarettes
• Have a family history of stomach cancer

It is hard to diagnose stomach cancer in its early stages. Indigestion and stomach discomfort can be symptoms of early cancer, but other problems can cause the same symptoms. In advanced cases, there may be blood in your stool, vomiting, unexplained weight loss, jaundice, or trouble swallowing. Doctors diagnose stomach cancer with a physical exam, blood and imaging tests, an endoscopy, and a biopsy.

Because it is often found late, it can be hard to treat stomach cancer. Treatment options include surgery, chemotherapy, radiation or a combination.

NIH: National Cancer Institute

[Learn More in MedlinePlus]

What is Stomach Cancer?

Learn about stomach cancer risk factors, symptoms, tests to diagnose, factors affecting prognosis, staging, treatment, and coping.
[Learn More in MedlinePlus]

• FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026

• FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025

• FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024

• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023

• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022

• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019

• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018

• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017

• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

• Previous Code: D00.1

• Parent Code: D00

• Next Code: D01