2027 ICD-10-CM Diagnosis Code D09Carcinoma in situ of other and unspecified sites

ICD-10-CM Codes›C00–D49›D00-D09›D09

ICD-10-CM D09
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

D09 is a non-billable ICD-10-CM category code for carcinoma in situ of other and unspecified sites, so it cannot be submitted on claims. Use a more specific code from this category instead, such as D09.0, D09.10, D09.19, and D09.20.

Code Identity

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

Code Classification

ChapterC00–D49Neoplasms
SectionD00-D09In situ neoplasms
CategoryD09Carcinoma in situ of other and unspecified sites
This CodeD09Carcinoma in situ of other and unspecified sites

Specific Coding for Carcinoma in situ of other and unspecified sitesOverview

Non-specific codes like D09 require more characters. Use one of these billable codes instead:

  • Use D09.0 for Carcinoma in situ of bladder

  • D09.1 for Carcinoma in situ of other and unspecified urinary organs

  • Use D09.10 for Carcinoma in situ of unspecified urinary organ

  • Use D09.19 for Carcinoma in situ of other urinary organs

  • D09.2 for Carcinoma in situ of eye

  • Use D09.20 for Carcinoma in situ of unspecified eye

  • Use D09.21 for Carcinoma in situ of right eye

  • Use D09.22 for Carcinoma in situ of left eye

  • Use D09.3 for Carcinoma in situ of thyroid and other endocrine glands

  • Use D09.8 for Carcinoma in situ of other specified sites

  • Use D09.9 for Carcinoma in situ, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to D09: 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 D09, its category, or a range that includes it.

Applicable To 1

These notes mention D09.

  • Z86.008 Personal history of in-situ neoplasm of other site
    Conditions classifiable to D09

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?
  • Can cancer be prevented?

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 D09Overview

What is the ICD-10 code for carcinoma in situ of other and unspecified sites?

D09 is the ICD-10-CM category for carcinoma in situ of other and unspecified sites, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is D09 (Carcinoma in situ of other and unspecified sites) a billable code?

No. This is a category header that groups the codes for carcinoma in situ of other and unspecified sites, and headers cannot be submitted on claims. Claims for carcinoma in situ of other and unspecified sites need a more specific code from this category, such as D09.0, D09.10, and D09.19.

Can D09 be reported with a code from D03?

Not as a rule. The Excludes1 note on D09 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).