ICD-10 block

D00–D09 In situ neoplasms

The block D00–D09 of ICD-10 is titled “In situ neoplasms”. It is part of Chapter II, Neoplasms, and holds 9 groups.

What D00–D09 includes

Conditions and terms that are coded here.

  • Bowen disease
  • erythroplasia
  • morphology codes with behaviour code /2
  • Queyrat erythroplasia

Coding notes

  • Many in situ neoplasms are regarded as being located within a continuum of morphological change between dysplasia and invasive cancer. For example, for cervical intraepithelial neoplasia (CIN) three grades are recognized, the third of which (CIN III) includes both severe dysplasia and carcinoma in situ. This system of grading has been extended to other organs, such as vulva and vagina. Descriptions of grade III intraepithelial neoplasia, with or without mention of severe dysplasia, are assigned to this section; grades I and II are classified as dysplasia of the organ system involved and should be coded to the relevant body system chapter.

Codes in D00–D09

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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