Is D05.9 a billable ICD-10 code?

No. D05.9 is a non-billable header code. Use a more specific subcategory for claims.

D05.9 ⚠ Non-billable

Unspecified type of carcinoma in situ of breast

Q: What is ICD-10 code D05.9?

ICD-10-CM code D05.9 stands for "Unspecified type of carcinoma in situ of breast". It is a non-billable header code in the Neoplasms chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Neoplasms

Code

D05.9

System

ICD-10-CM

Billable

No — use specific code

Effective

FY2026

Chapter

Neoplasms

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code D05.9?

ICD-10-CM code D05.9 represents Unspecified type of carcinoma in situ of breast. It is a non-billable header code requiring a more specific subcategory in the Neoplasms chapter, effective October 1, 2025 – September 30, 2026.

Is D05.9 billable?

No. D05.9 is a non-billable header. Select a more specific subcategory for claims submission.

What chapter is D05.9 in?

D05.9 belongs to the Neoplasms chapter (C00–D49) of ICD-10-CM.

Related codes in the D05 category

D05 Carcinoma in situ of breast Non-billable D05.0 Lobular carcinoma in situ of breast Non-billable D05.1 Intraductal carcinoma in situ of breast Non-billable D05.8 Other specified type of carcinoma in situ of breast Non-billable D05.00 Lobular carcinoma in situ of unspecified breast Billable D05.01 Lobular carcinoma in situ of right breast Billable D05.02 Lobular carcinoma in situ of left breast Billable D05.10 Intraductal carcinoma in situ of unspecified breast Billable

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