MCMedicalCodingSoftware
D04.2

D04.2: Carcinoma in situ of skin of ear and external auricular canal

Non-billable headerICD-10-CM

D04.2 is a non-billable header ICD-10-CM code for carcinoma in situ of skin of ear and external auricular canal. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above D04.2

A category’s note binds every code beneath it.

Written on D04: Carcinoma in situ of skin

  • erythroplasia of Queyrat (penis) NOS (D07.4)
  • melanoma in situ (D03.-)

Other codes that can never be billed with D04.2

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • D02.3Carcinoma in situ of other parts of respiratory system

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead D04.2

3 child codes. Green means billable.

Other codes under D04

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.