D03.21 – Melanoma in situ of right ear and external auricular canal

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

Billable code

ICD-10-CM code D03.21
Code
D03.21 (claims format: D0321)
Description
Melanoma in situ of right ear and external auricular canal
Billable
Yes – valid for HIPAA-covered transactions
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
D03 › D03.2

Notes inherited from parent codes

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

Block D00-D09

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

Related codes in D03.2

Frequently asked questions

What is ICD-10 code D03.21?

D03.21 is the ICD-10-CM code for melanoma in situ of right ear and external auricular canal, in the block D00-D09 (In situ neoplasms).

Is D03.21 a billable code?

Yes. D03.21 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does D03.21 belong to?

It belongs to category D03 – Melanoma in situ.

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.