Is ICD-10-CM code D05 billable?

No, D05 (Carcinoma in situ of breast) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code D05 belong to?

D05 belongs to Chapter 2 of the ICD-10-CM tabular list: C00–D49 (Neoplasms).

D05Not billable, use a more specific code below

Carcinoma in situ of breast

In In situ neoplasms (D00-D09), chapter 2: Neoplasms

12 billable codes under D05: none are a CC or MCC; none map to an HCC.

Instructional notes

Excludes1: not coded here, use a different code

carcinoma in situ of skin of breast (D04.5)
malignant neoplasm of breast (C50.-)
melanoma in situ of breast (skin) (D03.5)
Paget's disease of breast or nipple (C50.-)

Also applies, from In situ neoplasms (D00-D09)

These notes sit on D00-D09 and apply to every code under it, including D05.

Includes: conditions that are coded here

Bowen's disease
erythroplasia
grade III intraepithelial neoplasia
Queyrat's erythroplasia

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Rules for coding benign and malignant neoplasms: using the Neoplasm Table, sequencing primary and secondary sites, treatment encounters, complications, and current cancer versus personal history.

Admission/Encounter for treatment of primary site (page 33)
Admission/Encounter for treatment of secondary site (page 33)
Coding and sequencing of complications (page 34)
Primary malignancy previously excised (page 34)
Admissions/Encounters involving antineoplastic chemotherapy, immunotherapy and radiation therapy (page 35)
Admission/encounter to determine extent of malignancy (page 36)
Symptoms, signs, and abnormal findings listed in Chapter 18 associated with neoplasms (page 36)
Admission/encounter for pain control/management (page 36)

Read Section I.C.2 (page 32), 12 more topics

All codes under D05

D05 can't be used on a claim. Pick a billable code below; grey headings group them.

D05 MS-DRGs

As the principal diagnosis, all 12 billable codes under D05 group to MS-DRG 582, 583, 597, 598, or 599 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to D05

Notes on these codes point to D05.

Z86.000 Includes: Conditions classifiable to D05

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Breast Cancer

Breast cancer is a cancer that starts in breast tissue. It happens when cells in the breast change and grow out of control. New cells grow even when you don't need them, and old cells don't die when they should. These extra cells can form a mass called a tumor.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.