ICD-10-CM Tabular Index · Chapter 2 · FY 2026 D00–D09
In situ neoplasms (D00-D09) ICD-10-CM
The D00–D09 section covers in situ neoplasms with 141 ICD-10-CM diagnosis codes, of which 106 are billable in fiscal year 2026. The section is organized into the 9 code ranges listed below.
✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
9
Code Ranges
141
Diagnosis Codes
106
Billable Codes
D00–D09
Code Range
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the D00–D09 Code Range
ICD-10 codes D00-D09 cover carcinoma in situ, which means abnormal cells that are confined to their place of origin and have not invaded nearby tissues. These codes are used to record and classify early-stage cancers that have not become invasive, affecting various organs including the oral cavity, digestive organs, respiratory system, skin, breast, genital, urinary, eye, and endocrine glands.
This range includes specific sites such as D00 for carcinoma in situ of the oral cavity, esophagus, and stomach; D01 for digestive organs like the colon, rectum, and anus; D02 for respiratory system sites including larynx, trachea, and lung; and D03-D04 for melanoma and other skin cancers in situ. Codes like D05 specify carcinoma in situ of the breast, including lobular and intraductal types. Female genital sites such as cervix (D06), vulva (D07.1), and vagina (D07.2), as well as male genital sites such as penis (D07.4) and prostate (D07.5), are covered. The classification also extends to urinary organs (D09.0) and certain endocrine glands (D09.3). Synonyms like "lobular carcinoma in situ" and "ductal carcinoma in situ" help clarify these codes for conditions such as breast cancer, while terms like "Bowenoid papulosis" connect to penile or vulvar carcinoma in situ. These codes aid in precise clinical documentation and support patient care planning by distinguishing non-invasive neoplasms specific to each organ site.
Questions About This Page
How many codes are in the D00-D09 range?
The D00-D09 range contains 141 ICD-10-CM diagnosis codes in FY 2026. 106 of them are billable, and the rest are category headers that organize the section.
What conditions does D00-D09 cover?
The range covers in situ neoplasms. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
cervical adenocarcinoma in situ
cervical intraepithelial glandular neoplasia
cervical intraepithelial neoplasia III [CIN III]
severe dysplasia of cervix uteri
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
cervical intraepithelial neoplasia II [CIN II] N87.1
cytologic evidence of malignancy of cervix without histologic confirmation R87.614
high grade squamous intraepithelial lesion HGSIL of cervix R87.613
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
