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Dx

ICD-10-CM 2027 diagnosis code

D05Carcinoma in situ of breast

Not billable — use a more specific code

D05 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS, effective October 1, 2026. Updated September 29, 2026. About our data

About D05

D05 is the ICD-10-CM diagnosis code for carcinoma in situ of breast. It belongs to block D00-D09 (in situ neoplasms) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: D05.0 (breast), D05.1 (breast), D05.8 (breast) and D05.9 (breast).

Don't report D05 together with the conditions in its Excludes1 note: carcinoma in situ of skin of breast (D04.5), malignant neoplasm of breast (C50.-), melanoma in situ of breast (skin) (D03.5) and Paget's disease of breast or nipple (C50.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under D05

Coding notes

Excludes1Not coded here — never report together with this 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.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to D05.

Broader instructions also apply from D00-D09 In situ neoplasms and Chapter 2: Neoplasms.

Table of Drugs & Neoplasms entries

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about D05

Is D05 billable?

No. D05 is a header code. Report one of its more specific subcodes instead.