2026 ICD-10-CM Diagnosis Code D02Carcinoma in situ of middle ear and respiratory system

ICD-10-CM Codes›C00–D49›D00-D09›D02

ICD-10-CM D02
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D02 is a non-billable ICD-10-CM category code for carcinoma in situ of middle ear and respiratory system, so it cannot be submitted on claims. Use a more specific code from this category instead, such as D02.0, D02.1, D02.20, and D02.21.

Code Identity

ICD-10-CM Code
D02
Billable Status
No — Non-Billable Category
Code Describes
Carcinoma in situ of middle ear and respiratory system
Short Description
Carcinoma in situ of middle ear and respiratory system
Same as the full description in the CMS dataset.
Chapter
D00-D09
In situ neoplasms

Code Classification

ChapterC00–D49Neoplasms
SectionD00-D09In situ neoplasms
CategoryD02Carcinoma in situ of middle ear and respiratory system
This CodeD02Carcinoma in situ of middle ear and respiratory system

Specific Coding for Carcinoma in situ of middle ear and respiratory systemOverview

Non-specific codes like D02 require more characters. Use one of these billable codes instead:

  • Use D02.0 for Carcinoma in situ of larynx

  • Use D02.1 for Carcinoma in situ of trachea

  • D02.2 for Carcinoma in situ of bronchus and lung

  • Use D02.20 for Carcinoma in situ of unspecified bronchus and lung

  • Use D02.21 for Carcinoma in situ of right bronchus and lung

  • Use D02.22 for Carcinoma in situ of left bronchus and lung

  • Use D02.3 for Carcinoma in situ of other parts of respiratory system

  • Use D02.4 for Carcinoma in situ of respiratory system, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

  • code to identify:
  • exposure to environmental tobacco smoke Z77.22
  • exposure to tobacco smoke in the perinatal period P96.81
  • history of tobacco dependence Z87.891
  • occupational exposure to environmental tobacco smoke Z57.31
  • tobacco dependence F17
  • tobacco use Z72.0

Type 1 Excludes

  • melanoma in situ D03

Patient EducationClinical

Cancer

Cancer is not just one disease but many diseases. Cancer begins in your cells, which are the building blocks of your body. Usually, your body forms new cells as needed, replacing old cells that die. Sometimes this process goes wrong. New cells grow even when you don't need them, and old cells don't die when they should.

The full article covers:

  • What is cancer?
  • What are the types of cancer?
  • How does cancer develop?
  • What are the symptoms of cancer?
  • How is cancer diagnosed?
  • What are the treatments for cancer?
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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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D02Overview

Is D02 (Carcinoma in situ of middle ear and respiratory system) a billable code?

No. This is a category header that groups the codes for carcinoma in situ of middle ear and respiratory system, and headers cannot be submitted on claims. Claims for carcinoma in situ of middle ear and respiratory system need a more specific code from this category, such as D02.0, D02.1, and D02.20.