ICD-10 Code D07.4 – Carcinoma in situ of penis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D07.4 – Carcinoma in situ of penis
What it is
D07.4 identifies a noninvasive malignant lesion of the penis. The abnormal cells are confined to the epithelium and have not invaded deeper tissue.
Clinical signs
Findings may include a persistent penile lesion, plaque, ulcer, or erythematous area. Clinical features vary; refer to documentation, pathology, or biopsy results confirming carcinoma in situ.
When to use this code
Use D07.4 when the provider documents carcinoma in situ of the penis, including pathology-confirmed noninvasive disease. It is appropriate when the record clearly distinguishes in situ disease from invasive penile cancer or benign lesions. Check documentation if the site or histology is unclear.
Do not use for
Do not use D07.4 for invasive penile malignancy, dysplasia without carcinoma in situ, or nonspecific penile lesions. If the diagnosis is uncertain or not documented, check documentation.
Coding tip
Code only when the medical record specifies penile carcinoma in situ; if the pathology report uses another anatomic site or confirms invasion, select the more accurate code.