D05.0 – Lobular carcinoma in situ of breast

ICD-10-CM 2027 diagnosis code · In situ neoplasms

Non-billable header

ICD-10-CM code D05.0
Code
D05.0 (claims format: D050)
Description
Lobular carcinoma in situ of breast
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
2. Neoplasms (C00-D49)
Block
D00-D09 In situ neoplasms
Parent codes
D05

Billable codes under D05.0

D05.0 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

D05 – Carcinoma in situ of breast

Excludes1 (not coded here):
  • 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.-)

Block D00-D09

Includes:
  • Bowen's disease
  • erythroplasia
  • grade III intraepithelial neoplasia
  • Queyrat's erythroplasia

Index terms for D05.0

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in D05

Frequently asked questions

What is ICD-10 code D05.0?

D05.0 is the ICD-10-CM code for lobular carcinoma in situ of breast, in the block D00-D09 (In situ neoplasms).

Is D05.0 a billable code?

No. D05.0 is a header code with more specific child codes; report one of the billable codes listed above.

What category does D05.0 belong to?

It belongs to category D05 – Carcinoma in situ of breast.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.