ICD-10 Code D07.0 – Carcinoma in situ of endometrium (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D07.0 – Carcinoma in situ of endometrium
What it is
D07.0 identifies carcinoma in situ of the endometrium, meaning abnormal cancer-like cells are confined to the lining of the uterus and have not invaded deeper tissue. Use this code when the diagnosis is specifically documented.
Clinical signs
Clinical features vary; refer to documentation. Patients may have abnormal uterine bleeding or an abnormal endometrial evaluation, but the code depends on confirmed pathology or clinician documentation of carcinoma in situ.
When to use this code
Use D07.0 when the provider documents carcinoma in situ limited to the endometrium. It is appropriate for pathology-confirmed precancerous disease of the uterine lining and for encounters focused on evaluation, follow-up, or management of that diagnosis.
If the record only says “endometrial dysplasia,” “atypia,” or “suspicious for malignancy,” check documentation before assigning this code. Code only when the in situ diagnosis is clearly stated.
Do not use for
Do not use this code for invasive endometrial cancer, benign endometrial polyps, or nonspecific abnormal uterine bleeding. If the lesion is not documented as in situ, check documentation.
Coding tip
Verify that the pathology or provider note explicitly states “carcinoma in situ” and “endometrium” before coding D07.0.