D01.3 – Carcinoma in situ of anus and anal canal

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

Billable code

ICD-10-CM code D01.3
Code
D01.3 (claims format: D013)
Description
Carcinoma in situ of anus and anal 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
D01

Notes for D01.3

Applicable to:
  • Anal intraepithelial neoplasia III [AIN III]
  • Severe dysplasia of anus
Excludes1 (not coded here):
  • anal intraepithelial neoplasia I and II [AIN I and AIN II] (K62.82)
  • carcinoma in situ of anal margin (D04.5)
  • carcinoma in situ of anal skin (D04.5)
  • carcinoma in situ of perianal skin (D04.5)

Notes inherited from parent codes

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

D01 – Carcinoma in situ of other and unspecified digestive organs

Excludes1 (not coded here):
  • melanoma in situ (D03.-)

Block D00-D09

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

Index terms for D01.3

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

Related codes in D01

Frequently asked questions

What is ICD-10 code D01.3?

D01.3 is the ICD-10-CM code for carcinoma in situ of anus and anal canal, in the block D00-D09 (In situ neoplasms).

Is D01.3 a billable code?

Yes. D01.3 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does D01.3 belong to?

It belongs to category D01 – Carcinoma in situ of other and unspecified digestive organs.

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.