Malignant neoplasm of testis (C62)
The ICD-10 code section C62 is used to classify malignant neoplasms (cancers) of the testis, including specific codes for tumors in descended and undescended testes as well as those not otherwise specified. These codes help accurately identify the cancer's location and type within the testicular region.
The ICD-10 code for malignant neoplasm of testis covers a range of conditions from tumors in an undescended testis (C62.0) to those in a descended testis (C62.1), with subcodes specifying right or left testis involvement. Many synonyms for these conditions exist, such as “primary seminoma,” “non-seminomatous germ cell neoplasm,” “malignant teratoma,” and “malignant tumor of ectopic testis,” particularly under C62.00 and related subcategories. The codes also include unspecified sites of testicular cancer (C62.9), which correspond to various germ cell tumors, embryonal carcinoma, and choriocarcinoma. This detailed classification supports healthcare professionals and coders in pinpointing the exact nature and location of the malignancy for treatment and reporting purposes.
Neoplasms (C00–D49)
Malignant neoplasms of male genital organs (C60-C63)
C62 Malignant neoplasm of testis
C62.0 Malignant neoplasm of undescended testis
- C62.00 Malignant neoplasm of unspecified undescended testis
- C62.01 Malignant neoplasm of undescended right testis
- C62.02 Malignant neoplasm of undescended left testis
C62.1 Malignant neoplasm of descended testis
- C62.10 Malignant neoplasm of unspecified descended testis
- C62.11 Malignant neoplasm of descended right testis
- C62.12 Malignant neoplasm of descended left testis
C62.9 Malignant neoplasm of testis, unspecified whether descended or undescended
- C62.90 Malignant neoplasm of unspecified testis, unspecified whether descended or undescended
- C62.91 Malignant neoplasm of right testis, unspecified whether descended or undescended
- C62.92 Malignant neoplasm of left testis, unspecified whether descended or undescended
Malignant neoplasm of testis (C62)
Instructional Notations
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code to identify any functional activity
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Choriocarcinoma
A malignant metastatic form of trophoblastic tumors. Unlike the HYDATIDIFORM MOLE, choriocarcinoma contains no CHORIONIC VILLI but rather sheets of undifferentiated cytotrophoblasts and syncytiotrophoblasts (TROPHOBLASTS). It is characterized by the large amounts of CHORIONIC GONADOTROPIN produced. Tissue origins can be determined by DNA analyses: placental (fetal) origin or non-placental origin (CHORIOCARCINOMA, NON-GESTATIONAL).
Choriocarcinoma, Non-gestational
A highly malignant CHORIOCARCINOMA derived from the non-placental origin such as the totipotent cells in the TESTIS, the OVARY, and the PINEAL GLAND. It produces high levels of CHORIONIC GONADOTROPIN and can metastasize widely through the bloodstream to the lungs, brain, liver, bone, and other viscera by the time of diagnosis.
Seminoma
A radiosensitive, malignant neoplasm of the testis, thought to be derived from primordial germ cells of the sexually undifferentiated embryonic gonad. There are three variants: classical (typical), the most common type; anaplastic; and spermatocytic. The classical seminoma is composed of fairly well differentiated sheets or cords of uniform polygonal or round cells (seminoma cells), each cell having abundant clear cytoplasm, distinct cell membranes, a centrally placed round nucleus, and one or more nucleoli. In the female, a grossly and histologically identical neoplasm, known as dysgerminoma, occurs. (Dorland, 27th ed)
