D01.1

Carcinoma in situ of rectosigmoid junction

Billable / specific

D01.1 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Includes (from D01)

  • Bowen's disease
  • erythroplasia
  • grade III intraepithelial neoplasia
  • Queyrat's erythroplasia
  • Note: Functional activity
  • Note: All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Note: Morphology [Histology]
  • Note: Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Note: Primary malignant neoplasms overlapping site boundaries
  • Note: A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Note: Malignant neoplasm of ectopic tissue
  • Note: Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

Excludes1

Not coded here — never report together with this code.

  • melanoma in situ (D03.-) (from D01)

Parent code

  • D01Carcinoma in situ of other and unspecified digestive organsHeader

Related codes

  • D01.0Carcinoma in situ of colonBillable
  • D01.2Carcinoma in situ of rectumBillable
  • D01.3Carcinoma in situ of anus and anal canalBillable
  • D01.4Carcinoma in situ of other and unspecified parts of intestineHeader
  • D01.5Carcinoma in situ of liver, gallbladder and bile ductsBillable
  • D01.7Carcinoma in situ of other specified digestive organsBillable
  • D01.9Carcinoma in situ of digestive organ, unspecifiedBillable

Browse