2026 ICD-10-CM Diagnosis Code D09.10Carcinoma in situ of unspecified urinary organ

ICD-10-CM Codes›C00–D49›D00-D09›D09

ICD-10-CM D09.10
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D09.10 is a billable ICD-10-CM diagnosis code for carcinoma in situ of unspecified urinary organ. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 656 through 658, 686 through 688. Coders also document this condition as carcinoma in situ of urinary system. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Urinary system cancers - all other types.

Code Identity

ICD-10-CM Code
D09.10
Billable Status
Yes — Valid for Submission
Code Describes
Carcinoma in situ of unspecified urinary organ
Short Description
Carcinoma in situ of unspecified urinary organ
Same as the full description in the CMS dataset.
Parent Code
D09.1
Carcinoma in situ of other and unspecified urinary organs

Code Classification

ChapterC00–D49Neoplasms
SectionD00-D09In situ neoplasms
CategoryD09Carcinoma in situ of other and unspecified sites
This CodeD09.10Carcinoma in situ of unspecified urinary organ

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Carcinoma in situ of urinary system
  • Carcinoma in situ of urinary tract proper

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NEO047
Urinary system cancers - all other types
Default principal diagnosis: inpatient Yes · outpatient Yes

Table of NeoplasmsClinical

Anatomical sites in the Table of Neoplasms that reference this code family.

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
urinary organ or systemC68.9C79.10D09.10D30.9D41.9D49.59

Patient EducationClinical

Cancer

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Read the full article at MedlinePlus

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

Convert D09.10 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
233.9 Ca in situ urinary NEC
Approximate The match is approximate rather than exact.

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 D09.10Overview

Is D09.10 (Carcinoma in situ of other and unspecified urinary organs) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report carcinoma in situ of unspecified urinary organ on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D09.10 group to?

When carcinoma in situ of unspecified urinary organ is the principal diagnosis on an inpatient stay, it groups to MS-DRG 656, 657, 658, 686, 687, 688, with relative weights from 0.7903 to 3.1838 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D09.10?

Under the General Equivalence Mappings, carcinoma in situ of unspecified urinary organ converts to ICD-9-CM 233.9 (ca in situ urinary NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.