ICD-10 Code D06.1 – Carcinoma in situ of exocervix (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D06.1 – Carcinoma in situ of exocervix
What it is
D06.1 identifies carcinoma in situ limited to the exocervix, meaning abnormal cervical cells are present but have not invaded deeper tissue. Use it when documentation specifies a noninvasive lesion of the exocervical cervix.
Clinical signs
Clinical features vary; refer to documentation. This diagnosis is often based on cervical examination and pathology showing in situ malignant change without stromal invasion.
When to use this code
Use D06.1 when the provider documents carcinoma in situ of the exocervix, cervical CIS, or a noninvasive exocervical lesion confirmed by pathology. It may also apply when the record clearly localizes the in situ process to the exocervix. If the site is not specified, check documentation before coding.
Do not use for
Do not use this code for invasive cervical cancer or for dysplasia/CIN unless the record explicitly states carcinoma in situ. If the lesion is described only as cervical without exocervical location, check documentation.
Coding tip
Code the exact anatomic site only when the provider documents it; otherwise, query or verify the record.