ICD-10 Code D06.9 – Carcinoma in situ of cervix, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D06.9 – Carcinoma in situ of cervix, unspecified
What it is
This code identifies carcinoma in situ limited to the cervix, with no further detail on the cervical site. It means abnormal cells are present but have not invaded deeper tissue.
Clinical signs
Clinical features vary; refer to documentation. It is often found on cervical screening or biopsy, and the record may note a high-grade cervical lesion without invasion.
When to use this code
Use D06.9 when the provider documents carcinoma in situ of the cervix and does not specify endocervix, exocervix, or another cervical location. You may also use it when pathology confirms in situ disease but the site remains unspecified in the final diagnosis. Check documentation if the lesion is described as dysplasia only.
Do not use for
Do not use this code for invasive cervical cancer or for cervical dysplasia without carcinoma in situ. If the documentation names a specific cervical subsite, code that more precise option instead.
Coding tip
Code to the highest documented specificity, and query if the pathology report gives a cervical subsite that is not reflected in the assessment.